| ADVANCED ENVIRONMENTAL CONSULTANTS, INC. | 633628 | 1996-09-03 | Active | Jackson |
| Advanced Environmental Innovations, Inc | 1005877 | 2012-07-30 | Dissolved | Madison |
| Advanced Environmental LLC | 1198241 | 2020-01-13 | Active | Purvis |
| Advanced Environmental Of Purvis Mississippi LLC | 1218978 | 2020-06-24 | Active | Purvis |
| Advanced Environmental Scientific, Corp. | 1028517 | 2013-09-25 | Dissolved | — |
| Advanced Environmental Services LLC | 1541881 | 2026-04-13 | Active | JACKSON |
| ADVANCED ENVIRONMENTAL SERVICES, L.L.C. | 685805 | 2000-04-19 | Dissolved | Gulfport |
| ADVANCED ENVIRONMENTAL TECHNICAL SERVICES, L.L.C. | 617019 | 1995-04-13 | — | Gulfport |
| Advanced Environmental Technologies, LLC | 1294743 | 2021-07-19 | Active | Gulfport |
| Advanced Equipment Corporation | 909857 | 2007-04-03 | Dissolved | Gulfport |
| Advanced Equity Group LLC | 1291588 | 2021-06-29 | Active | Oxford |
| Advanced Estimating Services, LLC | 1492608 | 2025-06-03 | Active | Oxford |
| Advanced Executive Guardians for International Security, LLC | 1321371 | 2022-01-26 | Dissolved | southaven |
| ADVANCED EXPLORATION COMPANY, INC. | 130770 | 1946-10-28 | Revoked | — |
| Advanced Exteriors, Inc. | 878580 | 2005-09-23 | Dissolved | Round Rock |
| Advanced Eyecare, LLC | 873750 | 2005-06-13 | Active | Picayune |
| Advanced Fabrication Services, Inc. | 1259983 | 2021-02-10 | Active | Oxford |
| ADVANCED FABRICATION, INC. | 698414 | 2001-02-22 | Active | Hattiesburg |
| Advanced Facial Academy LLC | 1399835 | 2023-06-27 | Active | Madison |
| Advanced Facility Solutions Holdings, LLC | 1494685 | 2025-06-17 | Active | Madison |
| ADVANCED FAMILY MEDICAL, INC. | 618212 | 1995-05-23 | Dissolved | — |
| Advanced Family Medicine I L.L.C. | 897414 | 2006-08-17 | Dissolved | — |
| Advanced Family Medicine II L.L.C. | 897416 | 2006-08-17 | Dissolved | Picayune |
| ADVANCED FAMILY REHAB, INC. | 614325 | 1995-01-17 | Dissolved | — |
| ADVANCED FENCE AND DECK, LLC | 674707 | 1999-08-17 | Dissolved | — |
| Advanced Field Services, Inc. | 910259 | 2007-04-09 | Dissolved | Gulfport |
| Advanced Finalcial Solutions of Mississippi, LLC | 929671 | 2008-03-31 | Dissolved | — |
| Advanced Finance Services, Inc. | 892820 | 2006-05-25 | Dissolved | North Carthage |
| Advanced Financial Company | 1073640 | 2015-08-17 | Active | Gulfport |
| ADVANCED FINANCIAL PLANNING SECURITIES CORPORATION | 527199 | 1986-01-20 | Canceled | Gulfport |
| ADVANCED FINANCIAL SERVICES CO., INC. | 578398 | 1991-02-15 | Dissolved | BRANDON |
| Advanced Financial Services, LLC | 1452745 | 2024-08-07 | Active | Flowood |
| Advanced Financial Solutions, Inc | 940165 | 2008-10-27 | Withdrawn | Gulfport |
| Advanced Financial Solutions, LLC | 877526 | 2005-09-06 | — | Gulfport |
| Advanced Financial Solutionz L.L.C | 1227865 | 2020-07-30 | Dissolved | Horn lake |
| ADVANCED FIRE CONTROL, INC. | 103163 | 1977-10-27 | Canceled | Madison |
| ADVANCED FIRE PROTECTION CONSULTANTS, INC. | 620013 | 1995-07-10 | Dissolved | — |
| Advanced Fire Safety, LLC | 933752 | 2008-06-16 | Dissolved | JACKSON |
| ADVANCED FISHERIES ENGINEERING SYSTEMS, LLC | 647560 | 1997-10-01 | — | — |
| ADVANCED FISHERIES TECHNOLOGY SYSTEMS, L.L.C. | 651217 | 1997-10-01 | Dissolved | — |
| ADVANCED FITNESS SERVICES, LLC | 710522 | 2001-12-17 | Dissolved | New Albany |
| Advanced Fixtures, Inc. | 1226110 | 2020-07-23 | Active | Jackson |
| Advanced Fleet Solutions, LLC | 1203959 | 2020-03-06 | Active | Laurel |
| Advanced Flight Solutions LLC | 943107 | 2009-01-05 | Dissolved | — |
| Advanced Floor Care, Inc. | 963383 | 2010-03-16 | Dissolved | Jackson |
| ADVANCED FLOOR CARE, INC. | 712527 | 2002-02-04 | Dissolved | Byram |
| Advanced Flooring L.L.C. | 1284905 | 2021-05-25 | Dissolved | JACKSON |
| Advanced Flooring LLC | 994159 | 2011-12-22 | Dissolved | — |
| Advanced Flooring Removal LLC | 1140044 | 2018-02-26 | Active | Southaven |
| ADVANCED FLOORING SOLUTIONS LLC | 1484794 | 2025-04-10 | Active | HERNANDO |