| Company | Industry | # Emp | HQ | Company Total Emp | Additional Information |
| SCHOOL BOARD LAFAYETTE PARISH | Education | 4563 | - | - | |
| LAFAYETTE CONSOLIDATED GOVERNMENT | Public Administration | 2212 | - | - | Includes all government offices EXCEPT Clerk of Court, Assessor, and Sherriff |
| UNIV OF LA LAFAYETTE | Education | 1900 | - | - | |
| WAL-MART STORES INC | Retail Trade | 1774 | - | - | Includes Wal-Mart and Sam's Club locations |
| LAFAYETTE GENERAL MEDICAL CENTER | Health Care | 1761 | - | - | Includes hospital, imaging, and surgical centers |
| ISLAND OPERATING COMPANY | Oil and Gas | 1400 | HQ | - | |
| UNIVERSITY MEDICAL CENTER | Health Care | 1309 | - | - | Includes hospital and affiliated services |
| ACADIAN AMBULANCE & AIR MED SERVICES INC | Health Care/Transportation | 1295 | HQ | 2690 | |
| OUR LADY OF LOURDES REG MED CT | Health Care | 1265 | - | - | Includes hospital and affiliated services |
| STULLER INC | Manufacturing | 1234 | HQ | - | |
| REGIONAL MEDICAL CENTER OF ACADIANA | Health Care | 1121 | - | - | Includes Women's & Children's, Southwest Medical Center, and affiliated services |
| MAC-LAFF INC | Service | 1100 | - | - | McDonald's locations within parish |
| AT&T WIRELESS | Telecommunications | 1000 | - | - | Only includes the call center |
| BAKER HUGHES | Oil and Gas | 1000 | - | - | Includes Inteq, Oil Tools, and Production Quest divisions |
| HALLIBURTON ENERGY SERVICES | Oil and Gas | 863 | - | - | Locations within parish |
| ESS SUPPORT SERVICES WORLDWIDE | Retail Trade | 768 | - | - | Locations within parish |
| SMITH INTERNATIONAL | Oil and Gas | 760 | - | - | Includes Smith, Pathfinder, Coil Tubing, Perf-O-Log, Wilson Supply & Chem Tech |
| LAFAYETTE PARISH GOVERNMENT (not a part of LCG) | Public Administration | 703 | - | - | Includes Clerk of Court, Assessor, and Sherriff's Offices |
| WEATHERFORD | Oil and Gas | 694 | - | - | 19 Locations with the parish (10 in Lafayette, 7 in Broussard, & 2 in Scott) |
| FRANK'S CASING CREW | Oil and Gas | 651 | HQ | 1214 | |
| KEY ENERGY SERVICES | Oil and Gas | 649 | - | - | Locations within parish |
| FUGRO CHANCE | Oil and Gas | 590 | - | - | Includes Fugro Chance Inc, Geoservices, and Land Surveys |
| ALBERTSON'S FOOD & DRUG | Grocery | 584 | - | - | Locations within parish |
| PETROLEUM HELICOPTERS INC | Oil and Gas | 573 | HQ | 2363 | |
| CHEVRON USA | Oil and Gas | 523 | - | - | Locations within parish |
| US POST OFFICE | Public Administration | 506 | - | - | Locations within parish |
| WOOD GROUP | Oil and Gas | 500 | - | - | Operates in 46 countries, 28,000 employees, $5 billion in sales |
| SYDRAN | Service | 500 | - | - | Burger King locations within parish |
| TRANSCOMM | Telecommunications | 493 | - | - | Call Center formerly known as Nucomm |
| SCHLUMBERGER | Oil and Gas | 435 | - | - | Owns 40% of MI Swaco |
| VISION LOGISTICS HOLDING CORPORATION | Transportation | 418 | - | - | Includes Venture Logistics, Ace Transportation & Dynasty |
| OMNI ENERGY SERVICES CORPORATION | Oil and Gas | 350 | HQ | 600 | Locations within parish |
| NABORS DRILLING USA | Oil and Gas | 350 | - | - | |
| KNIGHT OIL TOOLS INC | Oil and Gas | 325 | HQ | 685 | Locations within parish |
| QUALITY CONSTRUCTION & PRODUCTIONS LLC | Oil and Gas | 321 | - | - | |
| DOERLE FOOD SERVICES INC | Wholesale Trade | 320 | HQ | 420 | |
| LHC GROUP | Health Care | 320 | HQ | 5574 | Locations within parish |
| M-I SWACO | Oil and Gas | 313 | - | - | 60% owned by Smith International and 40% by Schlumberger |
| ARIES MARINE | Oil and Gas | 300 | HQ | - | |
| MORENO GROUP LLC | Oil and Gas | 300 | HQ | 2500 | Locations within parish |
| WALGREENS | Retail Trade | 300 | - | - | Locations within parish |
| LOWE'S | Retail Trade | 300 | - | - | Locations within parish |
| BORDEN'S INC | Wholesale Trade | 296 | - | - | |
| TAYLOR'S INTERNATIONAL SERVICES | Food Service | 289 | HQ | - | Locations on 4 continents |
| SUPERIOR ENERGY SERVICES INC | Oil and Gas | 284 | - | - | Includes locations within parish EXCEPT affiliated companies |
TMC FOODS | Service | 282 | HQ | 760 | Popeye's Chicken and Biscuits locations within parish |
| SLEMCO | Utility Provider | 269 | - | - | Locations within parish |
| IBERIA BANK | Finance | 266 | HQ | 1447 | Locations within parish |
| HOME DEPOT | Retail Trade | 260 | - | - | Locations within parish |
| C.H. FENSTERMAKER & ASSOCIATES INC | Engineering | 256 | HQ | 328 | |
| C&C TECHNOLOGIES | Oil and Gas | 251 | HQ | 585 | |
| GANNETT COMPANY INC | Communication | 250 | - | - | |
| BERNHARD MECHANICAL CONTRACTORS INC | Construction | 250 | - | - | |
| L&D COMMUNITY CARE INC | Health Care | 250 | - | - | |
| COX COMMUNICATIONS | Communication | 247 | - | - | Includes call center and service representatives |
| AXXIS DRILLING INC | Oil and Gas | 237 | - | - | |
| SCHUMACHER GROUP | Health Care | 234 | HQ | 799 | Locations in 17 states |
| OFFSHORE ENERGY SERVICES INC | Oil and Gas | 233 | - | - | |
| GULF COAST TEACHING FAMILY SERVICES | Social Service | 230 | - | - | |
| OSCA-BJ SERVICES | Oil and Gas | 224 | - | - | Locations within parish |
| HEART HOSPITAL OF LAFAYETTE | Health Care | 220 | - | - | Includes hospital and affiliated services |
| DELMAR SYSTEMS INC | Oil and Gas | 220 | HQ | 279 | |
| MIDSOUTH BANK | Finance | 213 | HQ | 450 | Locations within parish |
| REPUBLIC BEVERAGE | Wholesale Trade | 210 | - | - | |
| HILTON LAFAYETTE AND TOWER | Hospitality | 205 | - | - | |
| ROTOCRAFT LEASING LLC | Leasing Service | 200 | HQ | 462 | Locations within parish |
| KERGAN BROTHERS | Retail Trade | 200 | HQ | 1400 | 7 Sonic Drive-In locations in parish/Own 42 stores statewide |
| BIS SALAMIS | Oil and Gas | 200 | - | - | |
| BRINKER INTERNATIONAL | Service | 198 | - | - | Chili's locations within parish |
| MEADOWBROOK SPECIALTY HOSPITAL | Health Care | 185 | - | - | Locations within parish |
| DUPRE TRANSPORT LLC | Transportation | 185 | HQ | 908 | |
| FLOWERS BAKING COMPANY | Food Processing | 181 | - | - | Evangeline Maid Bread |
| RED LERILLE'S HEALTH AND RACQUET | Recreation | 180 | - | - | |
| DOUG ASHY BUILDING MATERIALS INC | Retail Trade | 180 | - | - | Locations within parish |
| SCHILLLING DISTRIBUTING COMPANY INC | Wholesale Trade | 180 | - | - | |
| LAFAYETTE COCA-COLA BOTTLING | Wholesale Trade | 175 | - | - | |
| CETCO OILFIELD SERVICE GROUP INC | Oil and Gas | 172 | - | - | |
| COMPLETE HOME HEALTH | Health Care | 170 | - | - | |
| STONE ENERGY CORPORATION | Oil and Gas | 169 | HQ | 314 | |
| ACADIANA BOTTLING COMPANY INC | Wholesale Trade | 167 | - | - | |
| THE LEMOINE COMPANY LLC | Contracting Services | 166 | HQ | 232 | |
| SERVICE CHEVROLET INC | Retail Trade | 165 | - | - | |
| CVS PHARMACY | Retail Trade | 162 | - | - | Locations within parish (estimated by ReferenceUSA) |
| HUB CITY FORD INC | Retail Trade | 159 | - | - | |
| CHASE | Finance | 154 | - | - | Locations within parish (estimated by ReferenceUSA) |
| GILES AUTOMOTIVE | Retail Trade | 150 | - | - | |
| GAP INC | Retail Trade | 150 | - | - | Includes Gap, Gap Kids, Baby Gap, Old Navy, and Banana Republic |
| ABERCROMBIE & FITCH COMPANY | Retail Trade | 149 | - | - | Includes Abercrombie & Fitch, Abercrombie Kids, and Hollister Company |
| AMERICA'S PIZZA COMPANY LLC | Service | 147 | - | - | Pizza Hut locations within parish |
| LOADMASTER DERRICK & EQUIPMENT INC | Oil and Gas | 139 | - | - | |
| ACADIANA COMPUTER SYSTEMS INC | Technology | 139 | - | - | |
| HB RENTALS | Oil and Gas | 134 | - | - | |
| SOUTHERN THEATERS | Entertainment | 130 | - | - | The Grand Theaters locations within parish |
| MOSS MOTORS INC | Retail Trade | 130 | - | - | |
| STABIL DRILL SPECIALITIES LLC | Oil and Gas | 125 | - | - | |
CINTAS | Distribution | 122 | - | - | |
| PEGASUS INTERNATIONAL | Oil and Gas | 120 | - | - | |
| WPS INC | Oil and Gas | 117 | - | - | Locations within parish |
| TIMCO INC | Oil and Gas | 117 | - | - | |
| INTERNATIONAL PAPER | Manufacturing | 110 | - | - | |
| ACME TRUCK LINE INC | Transportation | 110 | - | - | Includes drivers and personnel in parish |
| GLAZER | Wholesale Trade | 107 | - | - | |
| SAMSON ROPE TECHNOLOGIES INC | Oil and Gas | 105 | - | - | |
| CAPITAL ONE BANK | Finance | 103 | - | - | Locations within parish; based on industry employment norms |
| NACHER CORPORATION | Oil and Gas | 100+ | - | - | |
| LOUISIANA VALVE SOURCE | Oil and Gas | 100 | - | - | |
| MACRO OIL COMPANY INC | Oil and Gas | 100 | - | - | Locations within parish |
| GLENN LEGE CONSTRUCTION | Construction | 100 | - | - | |
| CC'S COFFEE | Retail Trade | 100 | - | - | Location within parish |
| PETROLEUM COORDINATORS INC | Oil and Gas | 100 | - | - | |