This selection of professional services firms in Louisiana shows a mix of large and mid-sized companies. It includes Wipro Technologies, a management consulting company in New Orleans, and APTIM, a Baton Rouge firm specializing in environmental and infrastructure solutions. Also present are Phelps Dunbar LLP and Jones Walker LLP, both law firms based in New Orleans, and EDG, a global consulting engineering firm in Metairie serving oil & gas markets. Hospital Physician Partners in Lafayette provides clinical services in Emergency and Hospital Medicine.
The companies on this list are predominantly involved in business consulting, environmental services, and legal practice. A notable concentration of headquarters is observed in New Orleans and Baton Rouge, with several firms also located in Metairie and Lafayette. The founding dates range from the mid-19th century, with Phelps Dunbar LLP established in 1853, to the early 2000s, reflecting a blend of long-established and more recently founded enterprises.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Wipro Technologieswipro.com
Management consulting company located in New Orleans, providing services to help businesses improve operations and achieve their goals |
16,942 | |||
| 2 | 3,077 | ||||
| 3 |
Providence - An Engineering and Environmental Consulting Firmprovidenceeng.com
Employee-owned engineering and environmental consulting firm with experienced professionals offering services in engineering, environmental, and technology disciplines for governmental and industrial clients |
2,017 | |||
| 4 |
Hospital Physician Partnersscphealth.com
A leading clinical services partner in Emergency and Hospital Medicine, providing career opportunities for clinicians and strategic program management services for hospital leaders |
1,393 | |||
| 5 | 1,053 | ||||
| 6 |
Phelps Dunbar LLPphelps.com
A regional law firm with 300+ attorneys serving major commercial centers along the Gulf Coast, specializing in admiralty, business, employment, health care, insurance, and litigation services |
883 | |||
| 7 |
Jones Walker LLPjoneswalker.com
A law firm offering a wide range of legal services to national and international corporate clients through multiple offices across the US |
829 | |||
| 8 |
Gifted Healthcaregiftedhealthcare.com
Award-winning company offering career opportunities to clinicians and school-based professionals nationwide, providing access to diverse assignments in healthcare facilities and schools |
615 | |||
| 9 |
LEMOINE1lemoine.com
A versatile provider of enduring solutions in construction, disaster recovery, consulting, and logistics services across various sectors for government, healthcare, and commercial clients |
576 | |||
| 10 |
Hunt Guillot & Associates (HGA)hga-llc.com
A full-service program management and engineering firm with expertise in multiple industries providing services in various states and countries |
560 | |||
| 11 |
Ampiricalampirical.com
Specializing in engineering power solutions, Ampirical provides quality EPC services for high voltage powerlines and substations, ensuring successful project outcomes |
505 | |||
| 12 |
Keystone Engineering Inckeystoneengr.com
A multi-disciplined engineering firm offering innovative solutions in various industries with a focus on quality, safety, and cost-effectiveness |
496 | |||
| 13 |
ReCon Management Services, Inc.recon-group.com
Established in 1995, ReCon offers high quality engineering design and project management services to various industries with a focus on energy, innovation, and quality |
464 | |||
| 14 |
Kean Millerkeanmiller.com
A leading law firm in the Gulf South region, specializing in innovative and high-quality legal services for Fortune 500, national, and local clients |
452 | |||
| 15 |
CSRS, a Westwood companycsrsinc.com
Providing advisory and program management services for sustainable projects, disaster recovery, and navigating political bureaucracy to achieve long-term goals |
411 | |||
| 16 |
GIS Engineering, LLCgisy.com
An integrated engineering team providing coastal design, construction, and asset management services for government agencies, with a focus on large-scale projects |
389 | |||
| 17 |
Ford, Bacon & Davis, LLCfbd.com
A privately owned EPC company with 8 offices in US, specializing in engineering projects in Chemical/Petrochemical, Pulp and Paper, Refining, and Renewable Energy markets |
372 | |||
| 18 |
NVI, LLC (Nondestructive Visual Inspection)nvindt.com
A worldwide industrial solutions provider, specializing in infrastructure inspection and maintenance with a focus on reliability, customer service, and exceptional NDT techniques |
368 | |||
| 19 |
Savard Labor & Marine Personnelsavardgroup.net
Staffing agency providing skilled and unskilled blue collar labor for various worksites, specializing in reducing costs and increasing efficiency for clients |
364 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 20 |
Express Employment of the Northshore and Tangipahoaexpresspros.com
A staffing agency helping job seekers find full-time, part-time, or flexible jobs in various industries without charging fees for services |
341 | |||
| 21 |
Galloway Johnson Tompkins Burr & Smithgallowaylawfirm.com
Litigation firm serving local & international clients in various industries with expertise in insurance, maritime, construction, transportation, and corporate matters |
337 | |||
| 22 | 333 | ||||
| 23 |
Lofton.Jobsloftonstaffing.com
This company helps businesses by providing qualified personnel for various positions while handling all employer obligations and offering comprehensive employee benefits |
327 | |||
| 24 |
T. Baker Smithtbsmith.com
A professional consulting firm providing tailored solutions in engineering, environmental services, surveying, marine positioning, planning, and GIS/mapping with a focus on exceeding client expectations |
321 | |||
| 25 |
OrthoSyneticsorthosynetics.com
A national healthcare services provider supporting orthodontic and pediatric dental practices in the US, specializing in revenue growth and profitability through various services |
193 | |||
| 26 |
Boss Energy Solutionsgo-bes.com
A labor and consulting company in the energy sector, providing offshore and inland production personnel and staffing solutions to energy companies |
129 | |||
| 27 |
Polaris Engineeringpolarisepc.com
A Louisiana-based engineering firm offering full-service design services, including process, mechanical, civil, structural, instrumentation, electrical, control, and automation |
115 | |||
| 28 |
Huval & Associates, Inc.huvalassoc.com
An engineering consulting firm offering civil and structural engineering solutions nationwide and internationally, focused on exceptional service, innovation, and value for clients |
35 | |||
| 29 |
Rabalais Lawestateplanninginlouisiana.com
Louisiana-based law firm specializing in estate planning and settlement services for clients in multiple states, with a focus on professionalism and efficiency |
17 | |||
| 30 |
Rep Caprepcap.com
Specializing in B2B content marketing strategy, management, and production for management consultants, HR tech, insurance/risk advisors, and financial services industries |
17 | |||
| 31 |
Mansfield Melancon - Injury Lawyersmmcdlaw.com
A group of lawyers in Louisiana providing personalized legal representation in personal injury, criminal defense, family law, and business litigation |
15 | |||
| 32 |
The Derbes Law Firm, LLCderbeslaw.com
A legal firm in Metairie, serving clients in business, bankruptcy, estate planning, successions, and financial matters through litigation and transactional services |
13 | |||
| 33 | 
KM Consulting LLCkmconsultingllc.net
Provider of IT strategic planning, governance, project management, operational optimization, and healthcare revenue cycle optimization services to assist organizations in achieving their goals efficiently |
12 | |||
| 34 |
Veazey Felder & Renegar, LLCvfrlawfirm.com
A dynamic law firm offering exceptional legal services to individuals, small businesses, and corporate clients in various areas of law |
12 | |||
| 35 |
Burgos & Associatesburgoslawfirm.com
A Louisiana law firm with ethical attorneys handling personal injury, real estate, business, immigration, family law, and criminal defense cases with integrity |
10 | |||
| 36 |
OutSolve (formerly Pinnacle HR Consulting Services)outsolve.com
A complete compliance solutions provider acquired an HR consulting company, expanding its offerings for Affirmative Action planning and compliance services |
7 | |||
| 37 |
NFP Corporate Services (LA), Inc.nfp.com
A leading provider of comprehensive insurance solutions, empowering clients with expert teams, innovative technology, and strong insurer relationships for achieving their goals |
5 | |||
| 38 |
Bart Bernard Injury Lawyersbartbernard.com
A law firm with offices in Louisiana, fighting to secure compensation for people injured in accidents and families who have lost loved ones |
4 | |||
| 39 |
Complete Services Group LLCcomplete-llc.com
This company specializes in providing comprehensive services to the oil and gas industry, focusing on successful project completion while prioritizing environmental sustainability |
3 | |||
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How this list is built
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 Nov 14, 2026.
More company lists in Louisiana
- The largest companies in Louisiana 718
- Critical infrastructure operators in Louisiana 94
- Oil and Gas companies in Louisiana 94
- Healthcare providers in Louisiana 77
- Hospitals and Health Care companies in Louisiana 71
- Education providers in Louisiana 67
- Energy companies in Louisiana 58
- Retail chains in Louisiana 56
- Public sector organisations in Louisiana 51
- Construction companies in Louisiana 46
- Multinational companies in Louisiana 46
- Financial services firms in Louisiana 45
- Higher Education companies in Louisiana 39
- Companies with a mobile app in Louisiana 34
- Manufacturers in Louisiana 32
- Family-owned companies in Louisiana 31
- Hotel and hospitality groups in Louisiana 30
The same list elsewhere in United States
- Professional services firms in the United States 7,080
- Professional services firms in New York State 955
- Professional services firms in California 880
- Professional services firms in Texas 630
- Professional services firms in Florida 375
- Professional services firms in Virginia 344
- Professional services firms in Illinois 339
- Professional services firms in Massachusetts 249
- Professional services firms in New Jersey 249
- Professional services firms in Georgia 246
- Professional services firms in Pennsylvania 245
- Professional services firms in Ohio 195
- Professional services firms in Maryland 176
- Professional services firms in Michigan 173
- Professional services firms in Washington State 163
- Professional services firms in North Carolina 142
- Professional services firms in Alabama 136
- Professional services firms in Minnesota 124
- Professional services firms in New York 735
- Professional services firms in Chicago 196
- Professional services firms in Houston 156
- Professional services firms in Atlanta 143
- Professional services firms in San Francisco 130
- Professional services firms in Washington 109