| AMERICAN MIDSTREAM MARKETING, LLC | 1188269 | 2019-09-10 | Withdrawn | Gulfport |
| American Midstream Midla Reconfiguration, LLC | 1090483 | 2016-04-12 | Merged | JACKSON |
| AMERICAN MIDSTREAM PINEY WOODS, LLC | 1087621 | 2016-03-07 | Merged | Gulfport |
| AMERICAN MIDSTREAM, LLC | 1188270 | 2019-09-10 | Withdrawn | Gulfport |
| American Mine Research, Inc | 1557410 | 2026-06-24 | Active | JACKSON |
| AMERICAN MINERAL SPIRITS COMPANY | 307577 | 1968-12-16 | Canceled | Gulfport |
| AMERICAN MINERAL SPIRITS COMPANY | 433786 | 1938-09-10 | Canceled | CHICAGO |
| AMERICAN MINERALS & CHEMICAL CORPORATION | 433787 | 1954-09-04 | Canceled | DOVER |
| AMERICAN MINERALS, INC. | 433788 | 1976-08-23 | Dissolved | — |
| AMERICAN MINI STORAGE, INC. | 534811 | 1988-02-05 | Dissolved | GULFPORT |
| AMERICAN MINI-STORAGE OF JACKSON, LLC | 661288 | 1998-09-17 | Active | Madison |
| American Mining Insurance Group, LLC | 965553 | 2010-04-30 | — | Sumrall |
| AMERICAN MINORITY BUSINESS FORMS, INC. | 601639 | 1993-10-25 | Active | Gulfport |
| AMERICAN MOBILE COMMUNICATIONS, INC. | 604413 | 1994-02-04 | Dissolved | MADISON |
| American Mobile Home Transport LLC | 904530 | 2007-01-04 | Active | Thomastown |
| AMERICAN MOBILE HOMES CORPORATION | 433789 | 1969-08-22 | — | — |
| American Mobile Imaging of Alabama, Inc. | 960656 | 2010-01-22 | Dissolved | Gulfport |
| American Mobile Messaging, Inc. | 874716 | 2005-07-05 | Canceled | Gulfport |
| American Mobile Petroleum, Inc. | 1089710 | 2016-05-01 | Withdrawn | Gulfport |
| AMERICAN MOBILE SERVICES, INC. | 626042 | 1995-09-12 | Dissolved | Madison |
| AMERICAN MOBILE SYSTEMS, INC. | 622040 | 1995-09-12 | — | Madison |
| AMERICAN MOBILITY PRODUCTS, INC. | 720508 | 2002-07-26 | Dissolved | — |
| AMERICAN MOBILITY SERVICE INCORPORATED | 730966 | 2003-03-17 | Dissolved | JACKSON |
| American Mobility Systems Inc | 912447 | 2007-05-16 | Active | Jackson |
| AMERICAN MOBILPHONE PAGING, INC. | 653010 | 1998-02-17 | — | JACKSON |
| AMERICAN MODELING SCHOOL, INC. | 433790 | 1976-05-12 | Dissolved | — |
| American Modular Enterprises LLC | 1162004 | 2018-11-15 | Dissolved | D'Iberville |
| American Modular Financial, L.P. | 856960 | 2004-02-27 | — | Madison |
| American Modular Financial, L.P. | 851638 | 2004-02-27 | Expired | Madison |
| American Modular Power Solutions, Inc | 1102822 | 2016-10-07 | Active | Madison |
| AMERICAN MOLDED STRUCTURES, INC. | 614139 | 1995-01-12 | Dissolved | — |
| AMERICAN MONUMENT COMPANY, INCORPORATED | 533671 | 1986-12-05 | Active | PURVIS |
| AMERICAN MOPAS CORPORATION | 307578 | 1981-03-26 | Revoked | Madison |
| AMERICAN MORTGAGE & FINANCIAL SERVICES, INC. | 633864 | 1996-09-09 | Revoked | ATLANTA |
| AMERICAN MORTGAGE AND FINANCE LLC | 718594 | 2002-06-14 | Dissolved | — |
| AMERICAN MORTGAGE COMPANY | 433792 | 1959-03-17 | Dissolved | BUILDING JACKSON |
| AMERICAN MORTGAGE COMPANY | 433791 | 1965-10-06 | Merged | — |
| AMERICAN MORTGAGE COMPANY | 433793 | 1916-06-16 | Inactive | — |
| AMERICAN MORTGAGE COMPANY OF MISSISSIPPI, INC. | 654237 | 1998-03-20 | Dissolved | Flowood |
| AMERICAN MORTGAGE COMPANY, INC. | 659324 | 1998-07-28 | Dissolved | Laurel |
| American Mortgage Fund 1 LLC | 1465881 | 2024-11-18 | Revoked | Jackson |
| American Mortgage Group Inc. | 894533 | 2006-06-27 | Dissolved | McCloud |
| American Mortgage Investment Partners LLC | 917752 | 2007-08-20 | — | Madison |
| American Mortgage Lenders of Kentucky, Inc. | 901994 | 2006-11-03 | Dissolved | Gulfport |
| AMERICAN MORTGAGE NETWORK, INC. | 705756 | 2001-08-14 | Canceled | Madison |
| AMERICAN MORTGAGE OF SHREVEPORT, INC. | 558896 | 1988-11-21 | Revoked | BIRMINGHAM |
| AMERICAN MORTGAGE PROFESSIONALS, INC. | 669992 | 1999-04-23 | Revoked | Madison |
| AMERICAN MORTGAGE SECURITY CORP. | 433795 | 1949-02-04 | Canceled | — |
| AMERICAN MORTGAGE SERVICE COMPANY | 556401 | 1985-08-08 | Merged | JACKSON |
| American Mortgage Service Company | 1005800 | 2012-07-30 | Withdrawn | Gulfport |