| Alternative Investments, LLC | 851767 | 2004-02-25 | Dissolved | GREENVILLE |
| Alternative Lending Group LLC | 1404264 | 2023-07-28 | Withdrawn | Gulfport |
| ALTERNATIVE LENDING GROUP, INC. | 682136 | 2000-02-07 | Revoked | Gulfport |
| Alternative Living Inc. | 850540 | 2004-01-26 | Dissolved | Gulfport |
| ALTERNATIVE LONG DISTANCE, INC. | 628894 | 1996-03-21 | Revoked | Gulfport |
| ALTERNATIVE MARKET SPECIALISTS, LLC | 741994 | 2003-11-17 | — | Gulfport |
| ALTERNATIVE MARKETING & MANAGEMENT, INC. | 720901 | 2002-08-06 | Dissolved | — |
| ALTERNATIVE MARKETING, INC. | 591845 | 1992-10-19 | Dissolved | BILOXI |
| ALTERNATIVE MEDICAL SOLUTIONS, INC. | 640445 | 1997-03-04 | Dissolved | — |
| ALTERNATIVE MEDICAL SOLUTIONS, LLC | 736189 | 2003-07-09 | Dissolved | — |
| Alternative Ministries Church | 1364521 | 2022-11-01 | Active | Jackson |
| Alternative Ministries, Inc. | 1257189 | 2021-01-28 | Active | Jackson |
| Alternative Mortgage & Financial Services Co., L.L.C. | 876920 | 2005-08-19 | — | Madison |
| ALTERNATIVE MORTGAGE FUNDING CORPORATION | 667796 | 1999-03-05 | Revoked | ALTAMONTE SPRINGS |
| Alternative Motives LLC | 1168990 | 2019-02-14 | Active | Clinton |
| Alternative Personal Care Home LLC | 1002558 | 2012-05-25 | Dissolved | — |
| ALTERNATIVE PHONE, INC. | 734993 | 2003-06-13 | Revoked | OCALA |
| Alternative Power Systems Inc | 997642 | 2012-03-13 | Dissolved | Christian |
| Alternative Practice Solutions, LLC | 1072929 | 2015-08-06 | Revoked | Jackson |
| Alternative Protection Solutions, LLC | 1330437 | 2022-03-17 | Dissolved | Madison |
| Alternative Risk Company | 1441343 | 2024-05-07 | Active | Gulfport |
| Alternative Risk Strategies LLC | 1192916 | 2019-11-05 | Revoked | Oxford |
| ALTERNATIVE RISK TRANSFER INSURANCE STRATEGIES, INC. | 645564 | 1994-01-31 | Canceled | Madison |
| ALTERNATIVE RISK UNDERWRITING LLC | 1394625 | 2023-05-23 | Active | Hattiesburg |
| Alternative Roofing Solutions LLC | 1020446 | 2013-05-06 | Revoked | Paris |
| Alternative Sentencing & Arrest Programs, Inc. | 688065 | 2000-06-13 | Active | Gulfport |
| Alternative Signs & Graphics, L.L.C. | 1189701 | 2019-09-26 | Active | JACKSON |
| Alternative Solutions Group LLC | 1272299 | 2021-04-09 | Dissolved | Olive Branch |
| Alternative Solutions LLC | 1489075 | 2025-05-08 | Active | Jackson |
| ALTERNATIVE SOLUTIONS PEO, LLC | 973152 | 2010-10-18 | Active | Gulfport |
| ALTERNATIVE SOLUTIONS, INC. | 650248 | 1997-12-12 | Dissolved | — |
| Alternative Solutions, LLC | 872159 | 2005-05-11 | Dissolved | — |
| ALTERNATIVE SOURCE, Inc | 1084620 | 2016-02-01 | Revoked | Oxford |
| Alternative Staffing, Inc. | 1191462 | 2019-10-17 | Revoked | JACKSON |
| ALTERNATIVE TECHNOLOGY SYSTEMS, INC. | 307358 | 1978-08-11 | Dissolved | — |
| Alternative Therapeutics, LLC | 1314389 | 2021-12-07 | Dissolved | Jackson |
| Alternative Therapies, LLC | 893849 | 2006-06-14 | Dissolved | Gulfport |
| Alternative Thinking, Inc. | 864096 | 2004-11-29 | Dissolved | Clarksdale |
| ALTERNATIVE TO INCARCERATION, LLC | 1450447 | 2024-07-19 | Active | Saltillo |
| ALTERNATIVE TRADE CENTER, INC. | 568400 | 1989-12-20 | Active | CLEVELAND |
| Alternative Veterinary Care, Inc. | 850589 | 2004-01-28 | Dissolved | Forest |
| Alternative Veterinary Care, LLC | 1482704 | 2025-03-26 | Active | Mooreville |
| ALTERNATIVE YOUTH SERVICES, INC. | 655770 | 1998-04-28 | Canceled | Gulfport |
| ALTERNATIVES AND DISPUTE RESOLUTIONS, LLC | 638006 | 1997-01-07 | Dissolved | Ridgeland |
| Alternatives for Life Treatment & Recovery of Gulfport, LLC | 857983 | 2004-07-12 | Dissolved | — |
| Alternatives for Life Treatment & Recovery of Hernando, LLC | 857982 | 2004-07-12 | Dissolved | — |
| Alternatives for Life Treatment & Recovery of Jackson, LLC | 857981 | 2004-07-12 | Dissolved | Jackson |
| Alternatives in Engineering, Inc | 870704 | 2005-04-11 | Active | Gulfport |
| Alternatives Unlimited, Inc. | 984811 | 2011-06-16 | Revoked | BALTIMORE |
| ALTERNATIVES, INC. | 662012 | 1998-10-06 | Dissolved | — |