The 100 largest companies in Oklahoma (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	None normansmilecenter.com Offers general and cosmetic dentistry, including porcelain veneers, dental implants, crowns, and bridges, to correct dental problems and redesign smiles.	Wellness and Fitness Services	🇺🇸 Norman	65,323	n/a
2	Hobby Lobby hobbylobby.com National retail chain offering over seventy thousand arts, crafts, hobbies, home decor, and seasonal products while operating based on biblical principles and values.	Retail	🇺🇸 Oklahoma City	18,173	1972
3	Love's Travel Stops loves.com Family-owned company operating over 600 travel stops across 42 states, emphasizing clean facilities, friendly service, and strong core values.	Retail	🇺🇸 Oklahoma City	15,823	1964
4	Express Employment International expresspros.com International staffing company supporting franchise locations worldwide, providing staffing and HR services to connect individuals with jobs and businesses with employees	Staffing and Recruiting	🇺🇸 Oklahoma City	14,211	1983
5	Oklahoma State University go.okstate.edu Delivering education, research, and community engagement in alignment with a land-grant mission for over a century	Higher Education	🇺🇸 Stillwater	13,451	1890
6	University of Oklahoma ou.edu A top public university attracting students nationally and internationally, offering a private college atmosphere, academic excellence, and a wide range of fields of study	Higher Education	🇺🇸 Norman	11,872	1890
7	QuikTrip quiktrip.com A privately held company with 800+ stores in eleven states, focused on being the dominant convenience/gasoline retailer while prioritizing employee growth and community giving	Retail	🇺🇸 Tulsa	11,847	1958
8	H&P helmerichpayne.com Provider of advanced drilling technologies and solutions enhancing productivity, reliability, safety, and efficiency in land, international, and offshore operations.	Oil and Gas	🇺🇸 Tulsa	11,576	1920
9	Williams williams.com Provides transport, storage, and delivery solutions for clean energy, operating critical infrastructure to support a low-carbon energy future.	Oil and Gas	🇺🇸 Tulsa	6,995	1908
10	BOK Financial bokfinancial.com Regional financial services company offering commercial and consumer banking, investment management, brokerage, mortgage, trust, insurance, and electronic funds transfer services.	Financial Services	🇺🇸 Tulsa	6,871	1910
11	INTEGRIS Health integrishealth.org Largest Oklahoma-owned health system offering hospitals, clinics, rehabilitation, mental health, fitness, home health, and urgent care services statewide.	Hospitals and Health Care	🇺🇸 Oklahoma City	6,623	1994
12	ONEOK oneok.com Leading midstream operator provides gathering, processing, fractionation, transportation, storage, and marine export services for natural gas, NGLs, refined products, and crude oil.	Oil and Gas	🇺🇸 Tulsa	6,516	1906
13	Paycom paycom.com A payroll and HR software company simplifying employee life and transforming business processes with innovative technology and award-winning team	Software Development	🇺🇸 Oklahoma City	5,731	1998
14	Saint Francis Health System saintfrancis.com Integrated health system in Tulsa offering extensive healthcare services through multiple hospitals, clinics, and specialized care centers across Oklahoma.	Hospitals and Health Care	🇺🇸 Tulsa	4,699	1960
15	PPLSI legalshield.com The company provides affordable legal and privacy protection services to empower individuals and ensure access to justice and security for all	Law Practice	🇺🇸 Ada	4,563	1972
16	The Chickasaw Nation chickasaw.net A federally recognized tribe offering diverse programs and services to benefit Chickasaw families and communities through various business ventures	Government Administration	🇺🇸 Ada	4,208	n/a
17	Hillcrest HealthCare System hillcrest.com Healthcare system serving northeastern Oklahoma with 9 hospitals, 2 physician groups, 6,250 employees, 322 providers, and treating nearly 150,000 patients annually	Hospitals and Health Care	🇺🇸 Tulsa	4,055	n/a
18	Braum's careers.braums.com Family-owned chain offering fast food, hand-dipped ice cream, and fresh dairy products, bakery items, meats, fruits, and vegetables in multiple states	Food and Beverage Services	🇺🇸 Oklahoma City	3,907	1968
19	Heartland heartland.us A leading payment processor in the United States, offering secure card processing, POS systems, payroll solutions, and business services nationwide	Financial Services	🇺🇸 Oklahoma City	3,854	1997
20	Choctaw Nation of Oklahoma choctawnation.com The Choctaw Nation of Oklahoma is a federally recognized tribe focused on preserving their faith, family, culture, and providing opportunities for growth and prosperity	Government Administration	🇺🇸 Durant	3,853	n/a
21	Oklahoma Department of Human Services oklahoma.gov A state organization in Oklahoma dedicated to improving the quality of life for vulnerable individuals through support, resources, and community engagement	Civic and Social Organizations	🇺🇸 Oklahoma City	3,659	1936
22	OU Health ouhealth.com Comprehensive academic health system in Oklahoma with hospitals, clinics, and specialty care, including the state's only freestanding children's hospital and cancer center	Hospitals and Health Care	🇺🇸 Oklahoma City	3,571	n/a
23	State of Oklahoma oklahoma.gov The company delivers services to residents of Oklahoma through a large workforce of around 30,000 employees in various state agencies	Government Administration	🇺🇸 Oklahoma City	2,831	n/a
24	University of Central Oklahoma uco.edu A higher education institution in Oklahoma City metro providing transformative learning experiences, preparing future leaders with diverse opportunities and strong connections	Higher Education	🇺🇸 Edmond	2,749	1890
25	Oklahoma City Public Schools okcps.org A diverse urban school district in Oklahoma serving 34,000 students with various backgrounds and languages, offering special education programs	Education Administration Programs	🇺🇸 Oklahoma City	2,707	1889
26	Chesapeake Energy chk.com An Oklahoma City-based oil and gas company focused on responsibly developing leading positions in top US plays and aiming for net zero GHG emissions by 2035	Oil and Gas	🇺🇸 Oklahoma City	2,567	1989
27	University of Oklahoma Health Campus ouhsc.edu Seven health-related colleges providing education and healthcare services across Oklahoma City and Tulsa campuses near state capitol.	Higher Education	🇺🇸 Oklahoma City	2,509	n/a
28	Tulsa Community College tulsacc.edu Provides affordable higher education with multiple campuses, workforce development, university transfer, and tuition-free scholarships for Oklahoma students.	Higher Education	🇺🇸 Tulsa	2,483	1970
29	American Fidelity americanfidelity.com Providing tailored benefits strategies and insurance products to employers in education, public sector, automotive, and healthcare markets.	Insurance	🇺🇸 Oklahoma City	2,464	1960
30	ONE Gas jobs.onegas.com A natural gas distribution company serving over 22 million customers in Kansas, Oklahoma, and Texas, with a focus on creating a respectful online community	Utilities	🇺🇸 Tulsa	2,413	2014
31	Cherokee Nation cherokee.org Sovereign tribal government with a strong focus on preserving Cherokee culture, language, and values, while also offering diverse career opportunities	Government Administration	🇺🇸 Tahlequah	2,352	n/a
32	Hampton Inn and Suites hilton.com A hotel providing comfortable accommodations in standard rooms and suites with friendly staff for a pleasant stay	Hospitality	🇺🇸 Stillwater	2,327	2002
33	Oklahoma Department of Corrections oklahoma.gov Supervision of probation and parole, reintegration support, and use of data-driven, outcome-based practices for effective corrections management.	Law Enforcement	🇺🇸 Oklahoma City	2,311	1967
34	CaneCareers linktr.ee Career Services at The University of Tulsa provides career guidance, job search resources, and recruitment services for students, alumni, and employers	Higher Education	🇺🇸 Tulsa	2,273	n/a
35	The University of Tulsa utulsa.edu Private university emphasizing research, innovation, and entrepreneurship with strong faculty connections, diverse programs, and active campus life in Tulsa.	Higher Education	🇺🇸 Tulsa	2,269	1894
36	Bank of Oklahoma bankofoklahoma.com A community-focused bank with the resources of a regional leader, offering commercial and consumer banking, investment services, and mortgage origination	Financial Services	🇺🇸 Tulsa	2,241	n/a
37	Cherokee Federal cherokee-federal.com Provide innovative government contracting solutions globally in national security, IT, health, logistics, and humanitarian relief supporting tribal community.	Business Consulting and Services	🇺🇸 Tulsa	2,211	1969
38	First United Bank firstunitedbank.com An innovative community bank offering a range of financial services for consumers and businesses in the Southwest, focusing on wellness and personal development	Financial Services	🇺🇸 Durant	2,009	n/a
39	City of Tulsa cityoftulsa.org Providing municipal governance, economic development, public education support, and transportation infrastructure management for a diverse industrial community through cultural preservation and resource administration.	Government Relations Services	🇺🇸 Tulsa	1,983	1898
40	OGE Energy Corp.oge.com Serving over 910,000 customers in Oklahoma and Arkansas, providing energy with focus on safety, innovation, and community improvement.	Utilities	🇺🇸 Oklahoma City	1,892	1902
41	T.D. Williamson tdwilliamson.com The company provides innovative solutions for pipeline operators worldwide to maximize uptime, improve throughput, minimize risk, and address regulatory climate challenges	Oil and Gas	🇺🇸 Tulsa	1,872	1920
42	Norman Regional Health System normanregional.com A multi-campus health system in south central Oklahoma offering acute care, physician services, outpatient diagnostics, medical transport, and wellness services	Hospitals and Health Care	🇺🇸 Norman	1,844	1946
43	City of Oklahoma City okc.gov Provides municipal services, community information, and career opportunities for residents and employees within Oklahoma City government operations.	Government Administration	🇺🇸 Oklahoma City	1,822	n/a
44	Zeeco, Inc.zeeco.com A global leader in combustion and environmental solutions for various industries, specializing in ultra-low emission burners, flaring systems, and waste incineration	Oil and Gas	🇺🇸 Tulsa	1,812	1979
45	Choctaw Casinos & Resorts choctawcasinos.com Premier gaming entertainment company in Southeastern Oklahoma with 22 locations offering slot machines, poker, dining, lodging, live bands, and more	Gambling Facilities and Casinos	🇺🇸 Durant	1,746	1987
46	Northeastern State University nsuok.edu A diverse university offering lifelong learning and degree programs, with campuses in Tahlequah, Broken Arrow, and Muskogee, focusing on student success in a global society	Higher Education	🇺🇸 Tahlequah	1,735	1909
47	Oral Roberts University oru.edu An interdenominational Christian liberal arts university in Tulsa, preparing students spiritually, intellectually, and physically to impact the world	Education Administration Programs	🇺🇸 Tulsa	1,664	1963
48	AAON, Inc.aaon.com Innovative company advancing the HVAC industry with customizable solutions for commercial and industrial spaces, focusing on design, manufacturing, and testing	Machinery Manufacturing	🇺🇸 Tulsa	1,654	1988
49	NORDAM nordam.com A global aerospace company specializing in designing, manufacturing, and maintaining propulsion systems, aircraft structures, and transparencies for business and military markets	Aviation and Aerospace Component Manufacturing	🇺🇸 Tulsa	1,637	1969
50	Tinker Airforce Base A warehousing company located in Spencer, Oklahoma, specializing in operations at Tinker Airforce Base	Warehousing and Storage	🇺🇸 Spencer	1,637	n/a
51	BancFirst bancfirst.bank A $12 billion assets company with over 100 locations in 60 Oklahoma communities, offering a range of personal and commercial financial products and services	Banking	🇺🇸 Oklahoma City	1,581	n/a
52	Broken Arrow Public Schools baschools.org A large school district established in 1904 with over 18,000 students, focused on educating, equipping, and empowering learners for success	Education Administration Programs	🇺🇸 Broken Arrow	1,520	1904
53	Continental Resources clr.com Independent oil producer focused on exploration and production in major U.S. basins, driving American energy independence and market leadership.	Oil and Gas	🇺🇸 Oklahoma City	1,498	1967
54	Putnam City Schools putnamcityschools.org The company located in OKC ignites passion for learning, sparks imagination, and empowers students with a bold approach #GoBoldly	Primary and Secondary Education	🇺🇸 Warr Acres	1,475	1914
55	Life.Church life.church One church with multiple locations in the US and globally, focused on leading people to become fully devoted followers of Christ	Non-profit Organizations	🇺🇸 Edmond	1,407	1996
56	Union Public Schools unionps.org Premiere Oklahoma school district providing top salaries, best benefits, and extensive support for student success from early education to career readiness	Education Administration Programs	🇺🇸 Tulsa	1,387	1919
57	Moore Public Schools mooreschools.com The Moore School District provides quality education from Pre-K to 12th grade in Moore and south Oklahoma City, focusing on student achievement and community involvement	Primary and Secondary Education	🇺🇸 Moore	1,375	n/a
58	Oklahoma State Department of Health oklahoma.gov A state department focused on protecting and improving public health by preventing disease through various health services and programs	Government Administration	🇺🇸 Oklahoma City	1,367	n/a
59	EDMOND PUBLIC SCHOOLS edmondschools.net A large school district in Oklahoma with over 26,000 students and 3,000 employees, offering a variety of education options and empowering students for success	Primary and Secondary Education	🇺🇸 Edmond	1,362	1899
60	Oklahoma Heart Hospital okheart.com A physician-owned hospital in Oklahoma, designed by cardiologists to provide expert, individualized care with utmost comfort in a digital environment	Hospitals and Health Care	🇺🇸 Oklahoma City	1,354	2002
61	Nortek Air Solutions, LLC nortekair.com Leading HVAC manufacturer in North America providing custom solutions for industrial air handling, cleanroom systems, and mission critical technology with extensive experience and facilities	Machinery Manufacturing	🇺🇸 Okarche	1,305	1977
62	Cherokee Nation Businesses cherokeenationbusinesses.com An economic powerhouse owned by Cherokee Nation, focusing on innovation, diversification, job creation, and generating billions in annual revenue globally	Information Services	🇺🇸 Tulsa	1,226	2004
63	Norman Public Schools normanpublicschools.org A leading Oklahoma school district near the University of Oklahoma, known for academic excellence, fine arts, athletics, and opportunities for all students to succeed	Primary and Secondary Education	🇺🇸 Norman	1,206	1865
64	Ditch Witch ditchwitch.com The company manufactures equipment with signature orange color, rooted in pioneer spirit, hard work ethic, and pride of ownership They prioritize customer satisfaction	Machinery Manufacturing	🇺🇸 Perry	1,197	1949
65	Cherokee Nation Entertainment cherokeecasino.com A leading tribal business owning and operating casinos, hotels, restaurants, retail stores, golf courses, and entertainment venues for the Cherokee Nation and surrounding communities	Gambling Facilities and Casinos	🇺🇸 Catoosa	1,188	n/a
66	Atwoods Ranch & Home atwoods.com Retail company with 57 stores in multiple states offering clothing, tools, lawn & garden supplies, pet products, and seasonal items Over 2000 employees	Retail	🇺🇸 Enid	1,182	1960
67	Family & Children's Services fcsok.org A non-profit behavioral health clinic in metro Tulsa serving adults, children, and families by restoring wellbeing, healing abuse, and providing hope for recovery	Mental Health Care	🇺🇸 Tulsa	1,173	1921
68	Jenks Public Schools jenksps.org A public school system in Oklahoma with over 100 years of history, known for high academic standards, innovation, and academic success	Education Administration Programs	🇺🇸 Jenks	1,161	1908
69	Manhattan Construction Company manhattanconstructiongroup.com Family-owned construction company since 1896, specializing in building facilities across the US, Mexico, Central America, and the Caribbean, with a focus on trust and long-term relationships	Construction	🇺🇸 Tulsa	1,108	1896
70	Oklahoma Department of Transportation oklahoma.gov The company works towards providing a safe, economical, and effective transportation network for the people, commerce, and communities of Oklahoma	Government Administration	🇺🇸 Oklahoma City	1,099	n/a
71	Oklahoma City Community College occc.edu OCCC offers associate degree programs for direct job preparation or transfer, with dedicated faculty, flexible scheduling, and academic support services	Higher Education	🇺🇸 Oklahoma City	1,096	1972
72	Chickasaw Nation Industries, Inc.chickasaw.com Operating subsidiaries for federal government and commercial clients, offering solutions in various sectors, supporting Chickasaw Nation economic development.	Government Relations Services	🇺🇸 Norman	1,095	1996
73	Hampton Inn & Suites hilton.com The company is a hospitality provider located in Oklahoma City, offering accommodation services at Hampton Inn & Suites	Hospitality	🇺🇸 Oklahoma City	1,068	n/a
74	Comanche County Memorial Hospital ccmhhealth.com Independent, non-profit acute care facility in Southwest Oklahoma, providing award-winning care with 283 beds, 2,000 employees, 250 physicians, and 100 volunteers	Hospitals and Health Care	🇺🇸 Lawton	1,057	1948
75	Oklahoma City University okcu.edu A coeducational urban university in Oklahoma City offering a variety of undergraduate and graduate degrees in liberal arts and sciences disciplines	Higher Education	🇺🇸 Oklahoma City	1,030	1904
76	Oklahoma Children's Hospital OU Health ouhealth.com Innovative children's healthcare provider at OU Health, providing advanced research and treatments through hospital and outpatient services	Hospitals and Health Care	🇺🇸 Oklahoma City	999	n/a
77	Yukon Public Schools yukonschools.org A reputable school district in Oklahoma with over 8,400 students, offering pre-kindergarten to high school education with community involvement and accreditation	Primary and Secondary Education	🇺🇸 Yukon	981	1891
78	Crossroads Hospice crossroadshospice.com A national leader in hospice and palliative care, dedicated to providing innovative and compassionate support for patients and families facing serious illnesses or end-of-life care	Hospitals and Health Care	🇺🇸 Tulsa	976	1995
79	Mathis Home mathishome.com A family-owned furniture retailer with a longstanding reputation, offering a diverse selection of home furnishings from over 50 renowned brands	Furniture and Home Furnishings Manufacturing	🇺🇸 Oklahoma City	973	1960
80	Cypress Environmental Partners tirusa.com Nationally recognized environmental services company offering inspection, integrity, and water treatment solutions to support energy, water, and civil infrastructure sectors in the US	Oil and Gas	🇺🇸 Tulsa	963	2003
81	Omni Air International (OAI)oai.aero An international airline specializing in tailored passenger and government charter services, airline startup support, ACMI wet leasing, and aircraft management	Airlines and Aviation	🇺🇸 Tulsa	960	1993
82	Melton Truck Lines meltontruck.com Leading flatbed trucking company providing on-time transportation service across North America, specializing in Mexico with a 98% on-time record and strong focus on safety and driver training	Truck Transportation	🇺🇸 Tulsa	951	1954
83	Gateway gatewayfirst.com A leading financial institution based in Oklahoma offering banking and mortgage services to individuals and businesses with a strong national mortgage presence	Banking	🇺🇸 Tulsa	946	2019
84	Epic Charter Schools epiccharterschools.org A public virtual charter school in Oklahoma, offering individualized, self-paced education for PreK-12 students with a focus on flexibility and real-life learning experiences	E-Learning Providers	🇺🇸 Oklahoma City	941	2011
85	McGraw Realtors mcgrawrealtors.com A leading independent real estate company in Oklahoma and Northwest Arkansas, offering experienced associates and a wide selection of houses for sale	Real Estate	🇺🇸 Tulsa	934	1938
86	Stillwater Medical Center stillwater-medical.org A 117-bed acute care hospital in north central Oklahoma offering a wide range of medical services with a focus on quality care and patient satisfaction	Hospitals and Health Care	🇺🇸 Stillwater	896	1916
87	Flintco, LLC flintco.com Established in 1908, this construction company offers a full range of services from 8 offices, serving various industries with a focus on safety, quality, and continuous improvement	Construction	🇺🇸 Tulsa	895	1908
88	Mid-Del Schools mid-del.net A school district serving 13,000 students in 21 schools, located near Oklahoma City, offering a comprehensive educational program with high standards	Primary and Secondary Education	🇺🇸 Midwest City	893	1943
89	AHS Staffing ahsstaffing.com Connecting healthcare providers with top talent for employment opportunities with passion, loyalty, and integrity to benefit employees, clients, and community	Staffing and Recruiting	🇺🇸 Edmond	869	2008
90	John Zink johnzink.com Global leader in environmental solutions for various industries, specializing in engineered vapor and combustion systems with Smart Combustion™ technology for optimized performance and efficiency	Oil and Gas	🇺🇸 Tulsa	869	n/a
91	Tulsa Inspection Resources, LLC tirusa.com This company offers inspection services, non-destructive examination, and pipeline integrity support to energy, civil, and municipal water industries in the US	Oil and Gas	🇺🇸 Tulsa	866	2003
92	GRAND Mental Health grandmh.com A mental health organization providing outpatient therapy, rehabilitation, case management, medication management, wraparound services, and support for vulnerable populations	Mental Health Care	🇺🇸 Tulsa	857	1977
93	Southern Nazarene University snu.edu A Christian university offering challenging academic programs, distinguished faculty, and preparing graduates for job placement in various sectors globally	Higher Education	🇺🇸 Bethany	852	1899
94	Gateway Mortgage gatewayfirst.com A leading mortgage company focused on serving customers, employees, and communities through homeownership, with a commitment to industry leadership and growth	Financial Services	🇺🇸 Jenks	847	2000
95	Oklahoma Army National Guard nationalguard.com This company, with roots dating back to 1636, offers opportunities for individuals to serve in the National Guard, gaining skills, education, and pride	Armed Forces	🇺🇸 Oklahoma City	840	1636
96	Cleveland Integrity Services clevelandintegrity.com Provider of support services to Energy, Telecommunications, and Power industries including project scoping, scheduling, inspection, procurement, and land services	Staffing and Recruiting	🇺🇸 Cleveland	822	2011
97	SandRidge Energy sandridgeenergy.com An oil and natural gas exploration and production entity focusing on high-return projects in the US Mid-Continent and Niobrara Shale regions	Oil and Gas	🇺🇸 Oklahoma City	819	2006
98	Ackerman McQueen am.com Builds brands and businesses using strategic, emotional storytelling across multiple media, combining strategy, creative, and media expertise.	Advertising Services	🇺🇸 Oklahoma City	813	1939
99	Matrix Service Company matrixservicecompany.com A leading industrial engineering, construction, and maintenance contractor focused on sustainability and strong ESG practices, with global offices and recognitions	Construction	🇺🇸 Tulsa	809	1984
100	Ascension St. John healthcare.ascension.org Faith-based healthcare organization with hospitals, clinics, and facilities providing compassionate care to all, with special focus on persons in poverty	Hospitals and Health Care	🇺🇸 Tulsa	805	1926

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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.

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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