| Advanced Lab Concepts, Inc. | 852362 | 2004-03-08 | Revoked | ROUND ROCK |
| Advanced Land Development, LLC | 868156 | 2005-02-21 | Revoked | Cordova |
| Advanced Land Enhancement LLC | 1157128 | 2018-09-14 | Active | Jackson |
| Advanced Land Maintenance L.L.C. | 966426 | 2010-05-21 | Dissolved | ELLISVILLE |
| Advanced Land Solutions, LLC | 915962 | 2007-07-25 | Active | Pontotoc |
| Advanced Landscape 2000 LLC | 1418333 | 2023-11-10 | Dissolved | Jackson |
| Advanced Laparoscopic Associates of Mississippi, P.C. | 876573 | 2005-08-11 | Dissolved | Picayune |
| Advanced Laparoscopic Surgery of South West Mississippi PLLC | 977074 | 2011-01-13 | Dissolved | Jackson |
| Advanced Laser Pain and Chiropractic Clinic LLC | 1156654 | 2018-09-10 | Dissolved | JACKSON |
| Advanced Laser Solutions, LLC | 886525 | 2006-02-10 | — | — |
| ADVANCED LAWN MAINTENANCE, INC. | 667901 | 1999-03-08 | Dissolved | ABBEVILLE |
| ADVANCED LAWN PROVIDERS LLC | 1434966 | 2024-03-21 | Dissolved | Flowood |
| Advanced Lawn Solutions, LLC | 1357336 | 2022-09-09 | Dissolved | RIDGELAND |
| ADVANCED LAWNS PRESSURE WASHING AND AUTO DETAIL LLC | 1226007 | 2020-07-22 | Dissolved | PICAYUNE |
| ADVANCED LAWNS, LLC | 1136111 | 2018-01-08 | Active | Greenville |
| Advanced Leadership Strategists, LLC | 1318078 | 2022-01-10 | Active | Ocean Springs |
| Advanced Leak Detection LLC | 1433246 | 2024-02-27 | Active | Ridgeland |
| Advanced Learning Centers, Inc. | 939844 | 2008-10-20 | Withdrawn | Gulfport |
| Advanced Learning Partnerships Inc | 1474655 | 2025-01-30 | Active | Jackson |
| ADVANCED LEARNING TECHNOLOGIES CORPORATION | 561716 | 1989-03-01 | Merged | JACKSON |
| Advanced Lending, LLC | 911586 | 2007-05-02 | Dissolved | — |
| ADVANCED LIGHTING SOLUTIONS, INC. | 744556 | 2004-01-14 | Dissolved | North Enid |
| ADVANCED LOCKSMITH INC | 1172353 | 2019-03-16 | Active | BILOXI |
| ADVANCED LOGGING SYSTEMS, INC. | 573436 | 1990-07-13 | Dissolved | DEKALB |
| ADVANCED LOGISTIC SERVICES LLC | 1405206 | 2023-08-04 | Dissolved | Ridgeland |
| Advanced Logistics Inc | 921624 | 2007-10-29 | Active | Columbus |
| Advanced Logistics Transport, LLC | 961360 | 2010-02-05 | Dissolved | Aberdeen |
| Advanced Lubricants of Illinois, Inc | 917274 | 2007-08-10 | Withdrawn | Gulfport |
| Advanced Lubrication Solutions, Inc. | 873092 | 2005-05-27 | Dissolved | — |
| Advanced Machine Works LLC | 1237688 | 2020-10-01 | Dissolved | Pass Christian |
| ADVANCED MAIL EXCHANGE, INC. | 574739 | 1990-09-07 | Dissolved | LAUREL |
| Advanced Maintenance & Sheet Metal, Inc | 868247 | 2005-01-12 | Dissolved | Millington |
| Advanced Maintenance Services LLC | 1116024 | 2017-04-08 | Dissolved | — |
| ADVANCED MANAGEMENT CONCEPTS, INC. | 634875 | 1996-10-08 | Canceled | Madison |
| Advanced Management Group, Inc. | 1106456 | 2016-12-05 | Dissolved | Indianola |
| Advanced Management Inc | 882081 | 2005-11-28 | Dissolved | Oxford |
| ADVANCED MANAGEMENT SERVICES, INC. | 631451 | 1996-06-24 | — | Gulfport |
| Advanced Management Strategies Group, Inc. | 1419296 | 2023-11-20 | Active | Gulfport |
| ADVANCED MANAGEMENT SYSTEMS, INC. | 506234 | 1982-10-29 | Dissolved | — |
| Advanced Management Technology, Inc. | 1084246 | 2016-01-26 | Active | Gulfport |
| Advanced Manufactured Solutions, LLC | 1030583 | 2013-11-01 | Dissolved | Columbus |
| ADVANCED MANUFACTURING SYSTEMS, INC. | 663084 | 1998-11-04 | Canceled | — |
| ADVANCED MANUFACTURING SYSTEMS, INC. | 507566 | 1983-03-31 | Dissolved | RAYMOND |
| Advanced Marble Games, LLC | 1170304 | 2019-02-27 | Active | Collins |
| Advanced Marble Works, LLC | 958452 | 2009-11-30 | Active | Lucedale |
| Advanced Marine Performance, LLC | 1147534 | 2018-05-21 | Active | Gulfport |
| ADVANCED MARINE TRANSMISSIONS U.S.A., INC. | 636106 | 1996-11-15 | Dissolved | — |
| ADVANCED MARINE, INC. | 587226 | 1992-03-31 | Active | Biloxi |
| ADVANCED MARINE, INC. | 8701371 | 1987-04-02 | Dissolved | MOSS POINT |
| ADVANCED MARKETING SPECIALISTS, INC. | 569058 | 1990-01-11 | Merged | WEST POINT |