The 100 largest companies in Louisiana (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Lumen Technologies lumen.com The company provides digital connectivity solutions, utilizing their network strength to connect people, data, and applications quickly, securely, and effortlessly	Technology, Information and Internet	🇺🇸 Monroe	49,357	n/a
2	CenturyLink centurylink.com A technology leader providing hybrid networking, cloud connectivity, and security solutions globally through a secure and reliable global fiber network	IT Services and IT Consulting	🇺🇸 Monroe	23,931	n/a
3	Ochsner Health ochsner.org Nonprofit healthcare provider operating hospitals and urgent care centers, delivering expert care and promoting healthier lives across Gulf South.	Hospitals and Health Care	🇺🇸 New Orleans	18,121	n/a
4	Wipro Technologies wipro.com Management consulting company located in New Orleans, providing services to help businesses improve operations and achieve their goals	Business Consulting and Services	🇺🇸 New Orleans	16,942	n/a
5	Entergy entergy.com This company provides safe, affordable, and reliable energy to the Middle South region, with a focus on clean power generation and community impact	Utilities	🇺🇸 New Orleans	12,253	1913
6	Louisiana State University lsu.edu Leading institution in Louisiana with land-grant, sea-grant, and space-grant status, offering diverse programs in instruction, research, and public service	Higher Education	🇺🇸 Baton Rouge	12,167	1860
7	CenturyLink (Formerly Qwest)centurylink.com A leading US communications provider offering reliable and secure networking solutions, helping businesses manage network and IT complexity with cyber security solutions	Telecommunications	🇺🇸 Monroe	10,250	1930
8	Turner Industries turner-industries.com Provider of comprehensive heavy industrial solutions including construction, maintenance, fabrication, rigging, and transportation services across the United States with over 20,000 employees	Construction	🇺🇸 Baton Rouge	9,882	1961
9	Amedisys amedisys.com Amedisys provides exceptional home health, hospice, and personal care services, with a focus on personalized, clinically distinct care for patients	Hospitals and Health Care	🇺🇸 Baton Rouge	9,468	1982
10	Tulane University tulane.edu A highly ranked university with global research partnerships offering undergraduate, graduate, and professional degrees across various disciplines in a historic New Orleans location	Higher Education	🇺🇸 New Orleans	7,568	1834
11	State of Louisiana jobs.la.gov Provides diverse career opportunities across urban and rural areas, enabling individuals to contribute meaningfully through public service roles.	Government Administration	🇺🇸 Baton Rouge	6,608	n/a
12	LCMC Health lcmchealth.org Nonprofit health system providing comprehensive, community-focused care across multiple hospitals and urgent care centers in Louisiana and the Gulf Coast.	Hospitals and Health Care	🇺🇸 New Orleans	6,501	2009
13	LHC Group lhcgroup.com National provider of in-home healthcare services, hospice, and community-based care, delivering quality, value-based healthcare to patients in multiple states	Hospitals and Health Care	🇺🇸 Lafayette	6,166	1994
14	MMR Group mmrgrp.com Industry-leading provider of electrical, instrumentation, and technical services across a variety of sectors, known for exceptional value, quality, and safety	Construction	🇺🇸 Baton Rouge	4,338	1991
15	University of Louisiana at Lafayette louisiana.edu A top-tier research university offering a wide range of degree programs, competitive sports teams, diverse student organizations, and strong community service initiatives	Higher Education	🇺🇸 Lafayette	4,017	1898
16	Our Lady of the Lake Health fmolhs.org A not-for-profit medical center in Baton Rouge, Louisiana offering comprehensive healthcare services, graduate medical education programs, and specialized care for various conditions	Hospitals and Health Care	🇺🇸 Baton Rouge	3,803	n/a
17	Lamar Advertising Company lamar.com Offers various outdoor advertising formats, including billboards, transit, and airport displays, to help businesses reach broad audiences across the United States and Canada.	Advertising Services	🇺🇸 Baton Rouge	3,761	1902
18	Performance Contractors performance-contractors.com A general industrial contractor providing full-service construction, turnaround, and maintenance services with a focus on safety, quality, and performance since 1979	Construction	🇺🇸 Baton Rouge	3,648	1979
19	East Baton Rouge Parish School System One of Louisiana's largest school districts serving 41,000 students across 80 campuses, located in East Baton Rouge Parish on the Mississippi River	Education Administration Programs	🇺🇸 Baton Rouge	3,431	n/a
20	Willis Knighton Health wkhs.com A not-for-profit community healthcare corporation with hospitals, specialized centers, physician network, wellness centers, and philanthropic initiatives in Louisiana region	Hospitals and Health Care	🇺🇸 Shreveport	3,273	1924
21	Jefferson Parish Schools jpschools.org A large and diverse public school system in Louisiana, serving over 50,000 students with 80 schools and 6,400 employees Providing education for success	Primary and Secondary Education	🇺🇸 Harvey	3,252	n/a
22	PSC Group pscgroup.com Provider of product handling, logistics, and support services to refineries, chemical plants, and marine industries with a focus on safety, quality, and employee care	Chemical Manufacturing	🇺🇸 Baton Rouge	3,200	1952
23	Veteran Administration va.gov Hospital and health care company located in Shreveport, Louisiana, specializing in providing medical services to veterans and their families	Hospitals and Health Care	🇺🇸 Shreveport	3,162	n/a
24	APTIM aptim.com A professional solutions firm specializing in environmental, sustainability, resilience, and infrastructure solutions for government agencies, commercial clients, and energy customers	Environmental Services	🇺🇸 Baton Rouge	3,077	n/a
25	POOLCORP poolcorp.com A global distributor of swimming pool supplies and leisure products, serving customers across North America, Europe, and Australia through diverse markets and sustainable practices	Wholesale	🇺🇸 Covington	2,993	1983
26	Laitram laitram.com A global manufacturing leader with over 3,800 employees, 1300 patents, and 11 locations worldwide, committed to integrity, teamwork, and innovation	Machinery Manufacturing	🇺🇸 Harahan	2,789	1949
27	Brown & Root Industrial Services, LLC brownandroot.com Industrial services company offering engineering, construction, maintenance, turnaround, and specialty services to chemical/petrochemical, refining, and other plant sites worldwide Providing career growth opportunities	Construction	🇺🇸 Baton Rouge	2,741	1919
28	Acadian Ambulance acadianambulance.com A provider of emergency and non-emergency transportation services in over 70 counties, with nationally accredited medics exceeding EMT requirements	Hospitals and Health Care	🇺🇸 Lafayette	2,649	1971
29	Rouses Markets rouses.com A family-owned grocery chain with 60+ stores in the Southeast, providing top-notch customer service and championing local products since 1960	Retail	🇺🇸 Thibodaux	2,544	1960
30	Southeastern Louisiana University southeastern.edu A student-focused university in Southeastern Louisiana with a strong alumni network, offering opportunities and support beyond graduation	Higher Education	🇺🇸 Hammond	2,521	1925
31	Louisiana Tech University latech.edu Public university offering bachelor's, master's, and doctoral degrees with focus on teaching, research, technology, and student development.	Higher Education	🇺🇸 Ruston	2,460	1894
32	Baton Rouge General Medical Center brgeneral.org A full-service community hospital with over 600 beds, offering high-quality healthcare, groundbreaking services, and a wide range of medical programs and services	Hospitals and Health Care	🇺🇸 Baton Rouge	2,365	n/a
33	CADDO PARISH SCHOOL DISTRICT caddoschools.org A primary/secondary education company located in Shreveport, Louisiana, providing educational services to students in Caddo Parish School District	Primary and Secondary Education	🇺🇸 Shreveport	2,345	n/a
34	Intralox intralox.com Global leader in conveyance solutions offering innovative technologies for various industries in over 100 countries, backed by strong guarantees and global support	Automation Machinery Manufacturing	🇺🇸 Harahan	2,292	1971
35	FMOL Health fmolhs.org health system delivering compassionate, coordinated care prioritizing patients and communities, supporting team members with comprehensive rewards and development	Hospitals and Health Care	🇺🇸 Baton Rouge	2,212	1911
36	Calcasieu Parish School Board cpsb.org The company is a school system located in Calcasieu Parish that emphasizes teamwork and community involvement to provide unique educational experiences for students	Education Administration Programs	🇺🇸 Lake Charles	2,203	n/a
37	Weiser Security Services, Inc.weisersecurity.com A top security provider in the US, offering services to leading companies by blending manpower and technology for cost-effective solutions	Security and Investigations	🇺🇸 New Orleans	2,123	n/a
38	Danos danos.com Industry-leading service solutions provider, prioritizing safety, efficiency, and customer satisfaction Committed to employee training and engagement for world-class results	Oil and Gas	🇺🇸 Gray	2,111	1947
39	Louisiana Blue lablue.com Providing health insurance products and services exclusively in Louisiana, focusing on quality care, affordability, and improving health outcomes.	Insurance	🇺🇸 Baton Rouge	2,098	1934
40	Edison Chouest Offshore chouest.com A global leader in marine transportation solutions, offering diverse and technologically advanced vessels for a growing customer base worldwide	Maritime Transportation	🇺🇸 Cut Off	2,078	1960
41	Providence - An Engineering and Environmental Consulting Firm providenceeng.com Employee-owned engineering and environmental consulting firm with experienced professionals offering services in engineering, environmental, and technology disciplines for governmental and industrial clients	Environmental Services	🇺🇸 Baton Rouge	2,017	2000
42	United States Marine Forces Reserve marines.mil Marine Forces Reserve comprises both active duty and reserve Marines and Sailors, ready to augment active forces in wartime and serve the community in peacetime	Military	🇺🇸 New Orleans	1,964	1916
43	ITI Technical College iticollege.edu The company is focused on providing technical education to help students achieve better career opportunities and a higher quality of life	Higher Education	🇺🇸 Baton Rouge	1,963	1973
44	University of New Orleans uno.edu Public university offering diverse undergraduate and graduate programs, fostering inclusion, driving regional economy, and supporting research and cultural development.	Higher Education	🇺🇸 New Orleans	1,899	1958
45	HOTWORX hotworx.net Innovative fitness program combining infrared heat and isometrics for a 30-minute workout, providing better results than traditional hot yoga routines	Wellness and Fitness Services	🇺🇸 Marrero	1,885	2017
46	H&E Rentals he-equipment.com Established in 1961, this company is a leading national equipment rental provider, offering reliability, fair prices, and top-notch service to customers across the United States	Construction	🇺🇸 Baton Rouge	1,757	1961
47	Ochsner Lafayette General ochsner.org Healthcare organization with multiple hospitals, clinics, and professional centers serving 220,000 patients annually, including a Level II Trauma Center and teaching hospitals	Hospitals and Health Care	🇺🇸 Lafayette	1,749	n/a
48	City of New Orleans nola.gov City known for historic neighborhoods, vibrant nightlife, universities, boutique shopping, and as a top U.S. tourist destination.	Government Administration	🇺🇸 New Orleans	1,728	1718
49	Woman's Hospital womans.org Specializing in women's health, this nonprofit organization is dedicated to improving the well-being of women and infants through innovative programs and services	Hospitals and Health Care	🇺🇸 Baton Rouge	1,676	1968
50	Cajun Industries, LLC cajunusa.com A nationally recognized construction leader providing integrated self-performed EPC services in civil, deep foundations, and mechanical fields to renowned clients worldwide	Construction	🇺🇸 Baton Rouge	1,650	1973
51	ISC Constructors, L.L.C.iscgrp.com Specializing in electrical, instrumentation, and controls solutions, this industrial engineering and construction company prioritizes safety, quality, and workforce development	Construction	🇺🇸 Baton Rouge	1,642	1989
52	IBERIABANK firsthorizon.com The company provides personalized financial services including retail, commercial, private banking, mortgages, online banking, and investment services with a focus on customer satisfaction	Banking	🇺🇸 Lafayette	1,598	1887
53	Loyola University New Orleans loyno.edu A Jesuit-centered academic institution in New Orleans offering a wide variety of undergraduate, graduate, and professional degrees in various disciplines	Higher Education	🇺🇸 New Orleans	1,582	n/a
54	EXCEL Group excelwithus.com A trusted provider of construction, maintenance, fabrication, and project management solutions for industrial, manufacturing, and governmental clients, focusing on safety, quality, and reliability	Construction	🇺🇸 Baton Rouge	1,574	1983
55	Louisiana Department of Health ldh.la.gov Protect and promote health, ensure access to medical, preventive, and rehabilitative services for all Louisiana residents effectively.	Hospitals and Health Care	🇺🇸 Baton Rouge	1,531	n/a
56	St. Tammany Parish Public School System stpsb.org A leading public school system in St Tammany Parish, educating over 38,000 students with a focus on innovative instruction and academic excellence	Primary and Secondary Education	🇺🇸 Covington	1,503	n/a
57	Tulane University School of Medicine medicine.tulane.edu The organization is dedicated to medical education, research, and patient care to heal communities, with a focus on public service	Higher Education	🇺🇸 New Orleans	1,501	1834
58	University of Louisiana Monroe ulm.edu Educational institution offering a wide range of academic programs including graduate and undergraduate degrees in various areas of study	Higher Education	🇺🇸 Monroe	1,493	1931
59	Oil and Gas Recruiter joinoilandgas.com Providing a platform for sharing comprehensive information and news about oil and gas industry including training, job opportunities, articles, videos, and events	Oil and Gas	🇺🇸 Alexandria	1,493	n/a
60	HORNBECK OFFSHORE®hornbeckoffshore.com A leading provider of technologically advanced offshore service vessels for the energy industry in the US Gulf of Mexico and Latin America Dedicated to safety and environmental protection	Maritime Transportation	🇺🇸 Covington	1,490	n/a
61	PHI Aviation phihelico.com A global leader in helicopter transportation, providing safe and reliable services for energy, medical, government, and military organizations with innovative solutions	Airlines and Aviation	🇺🇸 Lafayette	1,466	1949
62	GIS gisy.com A company founded in 1948, originally serving the fishing industry, now providing services to oil & gas, power, renewables, and critical infrastructure sectors worldwide	Professional Services	🇺🇸 Galliano	1,464	1948
63	St. Tammany Health System sttammany.health A full-service healthcare provider offering world-class medical services with a focus on wellness, prevention, and disease management in a self-supporting community health system	Hospitals and Health Care	🇺🇸 Covington	1,456	1954
64	LAFAYETTE PARISH SCHOOL SYSTEM lpssonline.com A large public school district in Louisiana serving over 30,000 students from PreK-12, with a mission to provide quality education for global competitiveness	Education Administration Programs	🇺🇸 Lafayette	1,408	n/a
65	Hospital Physician Partners scphealth.com A leading clinical services partner in Emergency and Hospital Medicine, providing career opportunities for clinicians and strategic program management services for hospital leaders	Hospitals and Health Care	🇺🇸 Lafayette	1,393	1994
66	Xavier University of Louisiana xula.edu Established in 1925 by Katharine Drexel and the Sisters of The Blessed Sacrament, this university is a top producer of African American pharmacists and medical school graduates	Higher Education	🇺🇸 New Orleans	1,374	1925
67	Republic Finance republicfinance.com A consumer loan provider with over 70 years of experience, offering flexible options and exceptional customer service to help customers achieve their financial goals	Financial Services	🇺🇸 Baton Rouge	1,372	1952
68	Hardware Resources hardwareresources.com Manufacturer of kitchen cabinet, bath, and closet products since 1990 Offers decorative hardware, vanities, organizers, LED lighting, custom drawer boxes, and more	Wholesale Building Materials	🇺🇸 Bossier City	1,362	n/a
69	Latter & Blum Companies latter-blum.com A family-owned real estate company in the Gulf South, operating in Louisiana, Mississippi, and Texas, with a mission to build lives, careers, and communities	Real Estate	🇺🇸 New Orleans	1,352	1916
70	Ochsner LSU Health ochsnerlsuhs.org A partnership between Ochsner Health and LSU Health Shreveport to provide top-notch healthcare, medical education, and research in northern Louisiana	Hospitals and Health Care	🇺🇸 Shreveport	1,313	n/a
71	North Oaks Health System northoaks.org A leading healthcare system in Louisiana with hospitals, diagnostic centers, rehab clinics, surgery centers, hospice services, and a physician group	Hospitals and Health Care	🇺🇸 Hammond	1,297	1960
72	Delgado Community College dcc.edu A comprehensive community college in New Orleans, offering professional, technology, arts and sciences, and occupational education for a diverse student body	Higher Education	🇺🇸 New Orleans	1,294	1921
73	Lake Charles Memorial Health System lcmh.com A leading not-for-profit healthcare system in southwest Louisiana, offering personalized care, comprehensive services, a Level III Trauma Center, and advanced medical technology	Hospitals and Health Care	🇺🇸 Lake Charles	1,291	1952
74	Tulane Medical Center tuhc.com Providing opportunities to practice medicine on the leading-edge, focusing on teaching, research, and patient care in historic New Orleans	Hospitals and Health Care	🇺🇸 New Orleans	1,276	1976
75	Wrike wrike.com Provides a work delivery platform for people and AI, ensuring governed, auditable, and controlled integration of AI into consequential workflows for enterprises.	Software Development	🇺🇸 San Diego	1,257	2006
76	Marine Forces Reserve marforres.marines.mil This company serves as the headquarters command for the US Marine Corps Reserve, responsible for training and mobilizing Reserve Marines in times of need	Armed Forces	🇺🇸 New Orleans	1,256	1916
77	East Jefferson General Hospital lcmchealth.org A not-for-profit community hospital with state-of-the-art facilities, providing high-quality, compassionate healthcare with a focus on patient-centered care	Hospitals and Health Care	🇺🇸 Metairie	1,225	1971
78	Painting with a Twist paintingwithatwist.com Painting With a Twist offers fun art classes with local artists, socializing, and beverages for private parties, date nights, and team building events	Entertainment Providers	🇺🇸 Mandeville	1,225	2007
79	Stuller, Inc.stuller.com A jewelry manufacturing company based in Lafayette, Louisiana, offering a wide range of products including bridal jewelry, diamonds, gemstones, tools, and supplies worldwide	Wholesale Luxury Goods and Jewelry	🇺🇸 Lafayette	1,206	1970
80	Grambling State University gram.edu Historically black university in Louisiana offering diverse undergraduate, graduate, and certificate programs in various academic areas for career-ready graduates	Higher Education	🇺🇸 Grambling	1,176	1901
81	The Newtron Group thenewtrongroup.com Specializing in industrial construction, electrical, instrumentation, and design solutions, offering turn-key services nationwide with a focus on quality and savings	Construction	🇺🇸 Baton Rouge	1,175	1973
82	Touro Infirmary lcmchealth.org A not-for-profit, community-based adult acute care hospital offering medical training, inpatient/outpatient services, home health care, physician services, and retirement living options	Hospitals and Health Care	🇺🇸 New Orleans	1,166	1852
83	Our Lady of Lourdes Health fmolhs.org Regional acute care medical center with a focus on the healing ministry of Jesus Christ, offering a variety of medical and surgical specialties and access to comprehensive care resources	Hospitals and Health Care	🇺🇸 Lafayette	1,164	1949
84	Northwestern State University nsula.edu A regional comprehensive university offering undergraduate and graduate degrees at multiple campuses and online, with a focus on quality academic programs	Higher Education	🇺🇸 Natchitoches	1,162	1884
85	McNeese State University mcneese.edu A university in Lake Charles, Louisiana, providing hands-on learning and job-ready skills to students Graduates are highly sought after by regional, national, and international employers	Higher Education	🇺🇸 Lake Charles	1,138	1939
86	Bossier Parish School Board bossierschools.org A top-rated school district in Louisiana, Bossier Schools is known for its rapid growth and commitment to excellence	Primary and Secondary Education	🇺🇸 Bossier City	1,129	n/a
87	CenturyLink Business centurylink.com Innovative nationwide telecommunications company empowering small businesses with customizable solutions to serve local communities Visit website to learn more	Telecommunications	🇺🇸 Monroe	1,124	n/a
88	AWC, Inc.awc-inc.com Employee-owned company providing automation and control systems solutions, engineering, and support to optimize US manufacturing and utility operations with innovative problem-solving specialists in 20+ functions	Automation Machinery Manufacturing	🇺🇸 Baton Rouge	1,110	1965
89	Nicholls State University nicholls.edu Regional university in Thibodaux, LA offering diverse academic programs, 100+ degrees, 90+ organizations, and Division I athletics with a focus on first-generation college students and military-friendly initiatives	Higher Education	🇺🇸 Thibodaux	1,083	n/a
90	Children's Hospital New Orleans manningchildrens.org A not-for-profit pediatric medical center offering a wide range of healthcare services for children from birth to 21 years, with over 40 pediatric specialties	Hospitals and Health Care	🇺🇸 New Orleans	1,071	1955
91	EDG edg.net A global consulting engineering firm serving oil & gas and industrial markets with innovative solutions in various disciplines Offering growth opportunities and value to customers worldwide	Oil and Gas	🇺🇸 Metairie	1,053	1982
92	Waitr asap.com A technology company specializing in mobile ordering platforms for restaurants, sports organizations, event facilities, and payment processing solutions across various industries	Software Development	🇺🇸 Lafayette	1,051	2013
93	CenturyLink Business for Enterprise centurylink.com Innovative platform transforming retail, manufacturing, healthcare, and other industries with cutting-edge technology and experiences for the future of business	IT Services and IT Consulting	🇺🇸 Monroe	1,044	n/a
94	Bollinger Shipyards bollingershipyards.com Specializes in new construction, repair, and conversion of offshore and inland vessels with steel fabrication across multiple shipyards.	Shipbuilding	🇺🇸 Lockport	1,032	1946
95	City/Parish of Baton Rouge brla.gov This City-Parish government in Baton Rouge offers diverse job opportunities to serve the community with essential services for residents	Government Administration	🇺🇸 Baton Rouge	1,003	n/a
96	Repcon, Inc.repcon.com Industry-leading industrial contractor providing construction, turnaround, specialty welding, pipe fabrication, and technical services to various industries nationwide with a strong focus on safety and employee development	Construction	🇺🇸 Baton Rouge	993	n/a
97	Facilities Maintenance Management, LLC. (FMM)fmmla.com Facilities Maintenance Management offers comprehensive maintenance and construction services with a focus on quality, efficiency, and customer satisfaction	Facilities Services	🇺🇸 Denham Springs	987	2010
98	Southern University and A&M College- Baton Rouge subr.edu A historic institution promoting diversity, excellence in education, research, and public service, aiming to produce competent and productive graduates	Higher Education	🇺🇸 Baton Rouge	980	1880
99	Holy Cross School holycrosstigers.com Holy Cross School in New Orleans provides premier college preparatory education for young men from pre-kindergarten through twelfth grade Generations of students thrive here	Education	🇺🇸 New Orleans	957	1849
100	Louisiana Department of Children and Family Services dcfs.louisiana.gov The company focuses on ensuring the safety, well-being, and self-sufficiency of families, children, and individuals by providing various support services	Individual and Family Services	🇺🇸 Baton Rouge	946	1988

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

More company lists in Louisiana

The same list elsewhere in United States

The largest companies in the United States 91,669
The largest companies in California 12,813
The largest companies in New York State 10,485
The largest companies in Texas 8,086
The largest companies in Florida 4,945
The largest companies in Illinois 4,175
The largest companies in Pennsylvania 3,110
The largest companies in Massachusetts 3,093
The largest companies in Georgia 2,632
The largest companies in Ohio 2,618
The largest companies in New Jersey 2,569
The largest companies in Virginia 2,503
The largest companies in Michigan 2,346
The largest companies in North Carolina 2,174
The largest companies in Alabama 1,806
The largest companies in Washington State 1,785
The largest companies in Colorado 1,774
The largest companies in Minnesota 1,700
The largest companies in Maryland 1,527
The largest companies in Wisconsin 1,482
The largest companies in New York 6,920
The largest companies in San Francisco 2,030
The largest companies in Houston 1,791
The largest companies in Chicago 1,668