# List of multinational companies in Louisiana

Tamtam tracks 46 multinational companies headquartered in Louisiana. This list ranks all of them by number of employees on LinkedIn, led by Lumen Technologies, Wipro Technologies and MMR Group. Their median headcount is 607. Half of them were founded in 1982 or later. The most common headquarters are New Orleans (8), Baton Rouge (7) and Lafayette (6).

This selection of multinational companies in Louisiana includes large and mid-sized firms. Lumen Technologies provides digital connectivity solutions, while Wipro Technologies offers management consulting. MMR Group is a provider of electrical and technical services, and Lamar Advertising Company specializes in outdoor advertising. PSC Group supports refineries and chemical plants, and POOLCORP distributes swimming pool supplies. Many companies, such as Edison Chouest Offshore, HORNBECK OFFSHORE®, PHI Aviation, and GIS, operate in the maritime and energy sectors.

The companies represent a mix of industries, with a notable presence in technology, business consulting, and maritime transportation. There is also a strong cluster of companies headquartered in Baton Rouge, including MMR Group, Lamar Advertising Company, and PSC Group.

🇺🇸 Louisiana · 46 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Lumen Technologies](https://www.tamtam.ai/c/lumen-technologies) (lumen.com)<br>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 |  |
| 2 | [Wipro Technologies](https://www.tamtam.ai/c/wipro-technologies-new-orleans) (wipro.com)<br>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 |  |
| 3 | [MMR Group](https://www.tamtam.ai/c/mmr-group) (mmrgrp.com)<br>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 |
| 4 | [Lamar Advertising Company](https://www.tamtam.ai/c/lamar-advertising-company) (lamar.com)<br>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 |
| 5 | [PSC Group](https://www.tamtam.ai/c/psc-group) (pscgroup.com)<br>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 |
| 6 | [POOLCORP](https://www.tamtam.ai/c/poolcorp) (poolcorp.com)<br>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 |
| 7 | [Laitram](https://www.tamtam.ai/c/laitram) (laitram.com)<br>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 |
| 8 | [Intralox](https://www.tamtam.ai/c/intralox) (intralox.com)<br>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 |
| 9 | [Edison Chouest Offshore](https://www.tamtam.ai/c/edison-chouest-offshore) (chouest.com)<br>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 |
| 10 | [HOTWORX](https://www.tamtam.ai/c/hotworx) (hotworx.net)<br>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 |
| 11 | [HORNBECK OFFSHORE®](https://www.tamtam.ai/c/hornbeck-offshore) (hornbeckoffshore.com)<br>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 |  |
| 12 | [PHI Aviation](https://www.tamtam.ai/c/phi-aviation) (phihelico.com)<br>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 |
| 13 | [GIS](https://www.tamtam.ai/c/gis-galliano) (gisy.com)<br>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 |
| 14 | [Wrike](https://www.tamtam.ai/c/wrike) (wrike.com)<br>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 |
| 15 | [EDG](https://www.tamtam.ai/c/edg) (edg.net)<br>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 |
| 16 | [Barrister Global Services Network](https://www.tamtam.ai/c/barrister-global-services-network) (barrister.com)<br>A leading provider of IT services in the US, offering competitive pricing, multi-vendor management, and nationwide on-site support for hardware repair and maintenance | IT Services and IT Consulting | 🇺🇸 Hammond | 923 | 1972 |
| 17 | [C-Innovation, LLC](https://www.tamtam.ai/c/c-innovation-llc) (c-innovation.com)<br>Specializing in advanced subsea solutions, C-Innovation offers ROV services, subsea construction, and field development for the oil and gas sector worldwide | Oil and Gas | 🇺🇸 Mandeville | 913 | 2007 |
| 18 | [Phelps Dunbar LLP](https://www.tamtam.ai/c/phelps-dunbar-llp) (phelps.com)<br>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 | Law Practice | 🇺🇸 New Orleans | 883 | 1853 |
| 19 | [EPIC Piping](https://www.tamtam.ai/c/epic-piping) (oneepic.com)<br>Leading global industrial pipe fabrication organization with over 500 years of combined experience, offering turn-key solutions for various industries with cutting-edge technology | Manufacturing | 🇺🇸 Baton Rouge | 675 | 2015 |
| 20 | [Globalstar](https://www.tamtam.ai/c/globalstar) (globalstar.com)<br>Provides satellite and terrestrial connectivity services, offering secure data transmission, asset tracking, and monitoring for global consumers, businesses, and government agencies. | Satellite Telecommunications | 🇺🇸 Covington | 637 | 1991 |
| 21 | [CenturyLink (Formerly Savvis Inc.)](https://www.tamtam.ai/c/centurylink-formerly-savvis-inc) (centurylink.com)<br>Global communications, hosting, cloud, and IT services provider with a focus on managed hosting, colocation, and cloud solutions for business customers worldwide | Computer and Network Security | 🇺🇸 Monroe | 630 | 1930 |
| 22 | [DelVal Flow Controls](https://www.tamtam.ai/c/delval-flow-controls) (delvalflow.com)<br>DelVal Flow Controls offers a diverse range of high-quality valves, actuation accessories, and control systems for various industries worldwide with ISO 9001-2015 compliance | Oil and Gas | 🇺🇸 Geismar | 613 | 2006 |
| 23 | [United Vision Logistics](https://www.tamtam.ai/c/united-vision-logistics) (uvlogistics.com)<br>A nationally ranked transportation and logistics provider offering services across the US, with a strong presence in the energy industry | Truck Transportation | 🇺🇸 Lafayette | 607 |  |
| 24 | [IMTT](https://www.tamtam.ai/c/imtt) (imtt.com)<br>A leading industry player in bulk liquid product handling and storage across North America, specializing in petroleum, biofuels, chemicals, and vegetable/tropical oils | Oil and Gas | 🇺🇸 New Orleans | 601 |  |
| 25 | [Dynamic Industries, Inc.](https://www.tamtam.ai/c/dynamic-industries-inc) (dynamicind.com)<br>Offshore services company specializing in piping fabrication, installation, and maintenance Provides full line energy services, accommodations, and EPCIM contracting globally | Construction | 🇺🇸 New Orleans | 579 | 1985 |
| 26 | [MECO (Mechanical Equipment Company, Inc.)](https://www.tamtam.ai/c/meco-mechanical-equipment-company-inc) (meco.com)<br>A global leader in designing advanced water purification systems for various industries with locations worldwide, offering valuable and sustainable solutions | Industrial Machinery Manufacturing | 🇺🇸 Mandeville | 510 | 1928 |
| 27 | [Tulane University Celia Scott Weatherhead School of Public Health and Tropical Medicine](https://www.tamtam.ai/c/tulane-university-celia-scott-weatherhead-school-of-public-health-and-tropical) (sph.tulane.edu)<br>A leading school of public health offering a diverse range of programs, research opportunities, and global experience for students pursuing careers in public health | Higher Education | 🇺🇸 New Orleans | 468 | 1912 |
| 28 | [Taylors International Services, Inc.](https://www.tamtam.ai/c/taylors-international-services-inc) (taylors-international.com)<br>Provider of global life support services, including catering, housekeeping, base operations support, lodging, and facility management for clients worldwide in various environments | Food and Beverage Services | 🇺🇸 Lafayette | 466 | 1996 |
| 29 | [Pinot's Palette](https://www.tamtam.ai/c/pinot-s-palette) (franchise.pinotspalette.com)<br>An upscale art studio combining wine and painting experiences, offering franchise opportunities across the US and Canada with award-winning success | Entertainment Providers | 🇺🇸 Mandeville | 458 | 2009 |
| 30 | [ESS Support Services Worldwide - Gulf of Mexico](https://www.tamtam.ai/c/ess-support-services-worldwide-gulf-of-mexico) (essgulf.com)<br>Specializing in offshore and remote site catering and support services, ESS offers innovative solutions with a focus on great people, service, and results worldwide | Hospitality | 🇺🇸 Lafayette | 449 |  |
| 31 | [JM Test Systems, LLC.](https://www.tamtam.ai/c/jm-test-systems-llc) (jmtest.com)<br>A full-service metrology lab offering NIST Traceable calibration and repair for electronic, dimensional, and mechanical test equipment with ISO/IEC 17025 accreditation | Oil and Gas | 🇺🇸 Baton Rouge | 417 | 1982 |
| 32 | [AFS Logistics](https://www.tamtam.ai/c/afs-logistics) (afs.net)<br>Helps companies understand freight costs, optimizes shipping programs, and manages transportation services, ensuring fair payment and deserved outcomes for shippers. | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Shreveport | 398 | 1982 |
| 33 | [Bilfinger Salamis Inc](https://www.tamtam.ai/c/bilfinger-salamis-inc) (bilfinger.com)<br>An experienced provider of asset life cycle support services to the oil and gas industry, offering integrated solutions in maintenance, repair, and operations | Oil and Gas | 🇺🇸 Broussard | 343 |  |
| 34 | [Tulane University Law School](https://www.tamtam.ai/c/tulane-university-law-school) (law.tulane.edu)<br>Top 50 US law school offering studies in common and civil law systems, with international connections, pro bono service, and community focus | Higher Education | 🇺🇸 New Orleans | 313 |  |
| 35 | [PEC](https://www.tamtam.ai/c/pec-covington) (veriforce.com)<br>A global leader in supply chain risk management solutions, providing safety training programs and compliance platforms to optimize business performance | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Covington | 237 | 1993 |
| 36 | [Quality Companies](https://www.tamtam.ai/c/quality-companies) (qualitycompanies.com)<br>A consortium of oil and gas product and service companies with four industry-leading entities, focused on quality, people, and performance Located throughout the Gulf Coast region | Oil and Gas | 🇺🇸 Youngsville | 226 | 2001 |
| 37 | [AGCO](https://www.tamtam.ai/c/agco) (agcocorp.com)<br>An American-based company providing products and services in a specific industry (specific industry not mentioned in the description) | Real Estate | 🇺🇸 Lafayette | 221 |  |
| 38 | [The Dupuy Group](https://www.tamtam.ai/c/the-dupuy-group) (dupuygroup.com)<br>A global logistics and storage provider with over 27 million square feet of warehouse space offering transportation, logistics, and exceptional customer service | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 New Orleans | 102 | 1936 |
| 39 | [Dwight Andrus Insurance, a division of Hub International Gulf South](https://www.tamtam.ai/c/dwight-andrus-insurance-a-division-of-hub-international-gulf-south) (hubinternational.com)<br>A leading insurance brokerage offering risk management, employee benefits, retirement, and wealth management services with a focus on tailored solutions and client advocacy | Insurance | 🇺🇸 Lafayette | 91 | 1945 |
| 40 | [Conflandey Industries](https://www.tamtam.ai/c/conflandey-industries) (conflandey-industries.com)<br>Transforms wire rod into drawn wire for specific applications and dimensions. Products are used globally in automotive, construction, furniture, and paper industries. | Mining | 🇺🇸 Port Sur Saone | 62 | 1901 |
| 41 | [Rabalais Law](https://www.tamtam.ai/c/rabalais-law) (estateplanninginlouisiana.com)<br>Louisiana-based law firm specializing in estate planning and settlement services for clients in multiple states, with a focus on professionalism and efficiency | Law Practice | 🇺🇸 Baton Rouge | 17 | 1995 |
| 42 | [Brown Realty Company of Rayville](https://www.tamtam.ai/c/brown-realty-company-of-rayville) (brownrealtyco.com)<br>This company offers professional real estate brokerage services for farmland, timberland, and recreational properties in multiple states with over 100 years of combined experience | Real Estate | 🇺🇸 Rayville | 14 |  |
| 43 | [Honiron](https://www.tamtam.ai/c/honiron) (honiron.com)<br>A global manufacturing solutions provider specializing in industrial process equipment for various industries, offering innovative and cost-effective solutions to operational challenges | Machinery Manufacturing | 🇺🇸 Morgan City | 11 | 1852 |
| 44 | [Richter Pumps and Valves USA - A Unit of IDEX Corporation](https://www.tamtam.ai/c/richter-pumps-and-valves-usa-a-unit-of-idex-corporation) (richter-ct.com)<br>A pioneering manufacturer of lined pumps, valves, and ball valves for challenging production processes, ensuring safe and high-quality operation for over 65 years | Industrial Machinery Manufacturing | 🇺🇸 Geismar | 10 |  |
| 45 | [NFP Corporate Services (LA), Inc.](https://www.tamtam.ai/c/nfp-corporate-services-la-inc) (nfp.com)<br>A leading provider of comprehensive insurance solutions, empowering clients with expert teams, innovative technology, and strong insurer relationships for achieving their goals | Insurance | 🇺🇸 Baton Rouge | 5 | 1977 |
| 46 | [Prime Cyber Technologies](https://www.tamtam.ai/c/prime-cyber-technologies) (primecybertechnologies.com)<br>An international company offers control systems integration, wireless communications, data management, and telecommunication solutions tailored to specific needs worldwide | Technology, Information and Internet | 🇺🇸 New Orleans | 3 | 2015 |

## 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.

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## The same list elsewhere in United States

- [Multinational companies in the United States](https://www.tamtam.ai/l/multinational-companies-united-states) (16,191)
- [Multinational companies in California](https://www.tamtam.ai/l/multinational-companies-california) (2,587)
- [Multinational companies in New York State](https://www.tamtam.ai/l/multinational-companies-new-york-state) (2,211)
- [Multinational companies in Texas](https://www.tamtam.ai/l/multinational-companies-texas) (1,418)
- [Multinational companies in Florida](https://www.tamtam.ai/l/multinational-companies-florida) (897)
- [Multinational companies in Illinois](https://www.tamtam.ai/l/multinational-companies-illinois) (830)
- [Multinational companies in Massachusetts](https://www.tamtam.ai/l/multinational-companies-massachusetts) (637)
- [Multinational companies in New Jersey](https://www.tamtam.ai/l/multinational-companies-new-jersey) (623)
- [Multinational companies in Georgia](https://www.tamtam.ai/l/multinational-companies-georgia) (521)
- [Multinational companies in Pennsylvania](https://www.tamtam.ai/l/multinational-companies-pennsylvania) (472)
- [Multinational companies in Michigan](https://www.tamtam.ai/l/multinational-companies-michigan) (467)
- [Multinational companies in Alabama](https://www.tamtam.ai/l/multinational-companies-alabama) (428)
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## The same list elsewhere

- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,906)
- [Multinational companies in North America](https://www.tamtam.ai/l/multinational-companies-in-north-america) (18,654)

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Source: https://www.tamtam.ai/l/multinational-companies-louisiana