| Advanced Property Services, LLC | 1443714 | 2024-05-24 | Dissolved | Long Beach |
| Advanced Property Solutions LLC | 1556728 | 2026-06-21 | Active | Ocean Springs |
| AdVanced Property Solutions, LLC | 1236105 | 2020-09-11 | Dissolved | Moss Point |
| Advanced Property Solutions, LLC | 1100872 | 2016-09-08 | Dissolved | — |
| Advanced Prosthetics and Orthotics LLC | 863079 | 2004-11-01 | Dissolved | Cleveland |
| Advanced Protection Products International, Inc. | 1327378 | 2022-03-01 | Active | Gulfport |
| ADVANCED PROTECTION SYSTEMS, INC. | 629253 | 1996-04-19 | — | Madison |
| ADVANCED PROTECTIVE SYSTEMS, INC. | 130773 | 1972-08-24 | Dissolved | — |
| Advanced Psychiatric Clinic, Inc. | 864483 | 2004-12-06 | Dissolved | Flowood |
| Advanced Psychotherapy Adminstration Service, LLC | 1006361 | 2012-08-08 | Dissolved | — |
| Advanced Psychotherapy Associates, LLC | 1133479 | 2017-12-01 | Dissolved | Gulfport |
| ADVANCED PSYCHOTHERAPY ASSOCIATES, PLLC | 646391 | 1997-08-29 | — | — |
| Advanced Public Safety, LLC | 1154259 | 2018-08-31 | Withdrawn | Madison |
| Advanced Pulmonary Performance LLC | 1394187 | 2023-05-19 | Active | ridgeland ms |
| Advanced Pulmonary Solutions, LLC | 933326 | 2008-06-06 | Dissolved | — |
| Advanced Quality Construction, Inc. | 1022621 | 2008-06-04 | Revoked | Mandeville |
| ADVANCED RADIO TELECOM CORP. | 636725 | 1996-12-11 | Revoked | BELLEVUE |
| ADVANCED RAILROAD SPECIALTIES, INC. | 669474 | 1999-04-12 | Revoked | BATON ROUGE |
| Advanced Re-creations LLC | 1192941 | 2020-01-01 | Active | Booneville |
| Advanced Real Estate Connection LLC | 1344252 | 2022-06-09 | Withdrawn | RIDGELAND |
| Advanced Realty & Property Management, LLC | 1020979 | 2013-05-09 | Dissolved | New Augusta |
| ADVANCED REALTY SOLUTIONS, LLC | 721758 | 2002-08-23 | Dissolved | — |
| Advanced Receivable Solutions, Inc. | 851836 | 2004-02-26 | Dissolved | Madison |
| ADVANCED RECEIVABLES STRATEGY, INC. | 697890 | 2001-02-09 | — | Gulfport |
| ADVANCED RECEIVABLES STRATEGY-GOVERNMENT ACCOUNTS DIVISION, INC. | 703227 | 2001-06-12 | — | Gulfport |
| ADVANCED RECOVERY SYSTEMS, INC. | 617540 | 1995-05-05 | Active | Flowood |
| ADVANCED RECOVERY, INC. | 529575 | 1986-04-18 | Dissolved | COLUMBUS |
| Advanced Recycling, LLC | 1096723 | 2016-08-01 | Dissolved | Jackson |
| ADVANCED REFRACTORY SERVICES, INC. | 605027 | 1994-02-25 | — | Gulfport |
| ADVANCED REHABILITATION, LLC | 727051 | 2002-12-27 | Active | GREENWOOD |
| Advanced Remodeling, LLC | 1230021 | 2020-08-09 | Dissolved | Saucier |
| Advanced Renovation Solutions, LLC | 883704 | 2005-12-27 | Dissolved | Denham Springs |
| Advanced Renovations LLC | 1236351 | 2020-09-14 | Active | CORINTH |
| Advanced Renovations LLC | 1122148 | 2017-06-28 | Dissolved | — |
| Advanced Rescue Education Solutions LLC | 1384331 | 2023-03-20 | Revoked | Biloxi |
| Advanced Research & Inspecting, Inc. | 955267 | 2009-09-17 | Dissolved | — |
| Advanced Research Collection Technologies LLC | 1264231 | 2021-03-06 | Active | JACKSON |
| Advanced Research Concepts, Inc. | 1053950 | 2014-10-21 | Dissolved | — |
| ADVANCED RESEARCH LABORATORIES, INC. | 130774 | 1930-07-14 | Inactive | WILMINGTON |
| Advanced Resources Group Inc. | 1383483 | 2023-03-14 | Revoked | Waynesboro |
| Advanced Resources International, Inc. | 1097888 | 2016-07-29 | Active | Madison |
| Advanced Respiratory Solutions, Inc. | 1007946 | 2012-09-10 | Dissolved | CORINTH |
| Advanced Respiratory, Inc. | 1422618 | 2023-12-20 | Active | Gulfport |
| Advanced Restoration Services LLC | 868179 | 2005-02-22 | Active | Purvis |
| Advanced Restoration Specialists, LLC | 857664 | 2004-07-02 | Dissolved | GAUTIER |
| Advanced Restoration Technology, Inc. | 1006698 | 2012-08-14 | Active | Horn Lake |
| Advanced Restoration, LLC | 878064 | 2005-09-16 | Dissolved | — |
| Advanced Retail Merchandising Inc | 1013418 | 2013-01-02 | Revoked | Madison |
| ADVANCED RETAIL MERCHANDISING, INC | 725361 | 2002-11-18 | Canceled | Madison |
| Advanced Retail Solutions, Inc. | 1008259 | 2012-09-17 | Revoked | Ball Ground |