| American Gaming & Electronics, Inc. | 1106978 | 2016-12-13 | Active | Gulfport |
| AMERICAN GAMING & ELECTRONICS, INC. | 731865 | 2003-04-03 | Canceled | Madison |
| American Gaming & Electronics, Inc. | 1107433 | 2016-12-20 | Merged | Madison |
| AMERICAN GAMING & ENTERTAINMENT, LTD. | 619228 | 1995-06-14 | Revoked | Gulfport |
| AMERICAN GAMING ADVERTISING, INC. | 613342 | 1994-12-20 | Dissolved | Gulfport |
| AMERICAN GAMING AND RESORTS OF MISSISSIPPI, INC. | 613025 | 1992-04-27 | Dissolved | Gulfport |
| AMERICAN GAMING AND RESORTS OF MISSISSIPPI, INC. | 612093 | 1994-11-01 | Merged | Gulfport |
| AMERICAN GAMING CORPORATION | 587828 | 1992-04-27 | — | BILOXI |
| AMERICAN GAMING OF BILOXI, INC. | 603177 | 1993-12-23 | Dissolved | Gulfport |
| American Garage & Home Appliance, LLC | 1074288 | 2015-08-25 | Dissolved | Madison |
| AMERICAN GARDEN COLE, INC. | 433682 | 1979-01-15 | — | Gulfport |
| AMERICAN GARDEN EASTERN, INC. | 433683 | 1972-08-21 | Merged | Gulfport |
| AMERICAN GARDEN HORTON, INC. | 433684 | 1972-08-21 | — | Gulfport |
| AMERICAN GAS & OIL OPERATORS, INC. | 8703126 | 1987-06-26 | Dissolved | — |
| American Gas Products, Inc. | 1447400 | 2024-06-19 | Active | Madison |
| AMERICAN GEL-CAP CORPORATION | 640844 | 1997-03-26 | Dissolved | — |
| AMERICAN GENERAL AGENCIES, INC. | 433685 | 1932-05-25 | Inactive | — |
| AMERICAN GENERAL AIRCRAFT CORPORATION | 563034 | 1989-04-20 | Dissolved | GREENVILLE |
| AMERICAN GENERAL CAPITAL DISTRIBUTORS, INC. | 433686 | 1948-01-21 | — | Gulfport |
| AMERICAN GENERAL CAPITAL PLANNING, INC. | 307514 | 1948-01-21 | — | Gulfport |
| American General Construction LLC | 969413 | 2010-07-23 | Dissolved | BRANDON |
| American General Contracting LLC | 1142939 | 2018-03-28 | Dissolved | — |
| AMERICAN GENERAL CONTRACTORS, INC. | 433687 | 1970-12-03 | Dissolved | — |
| AMERICAN GENERAL DISTRIBUTORS, INC. | 674282 | 1999-08-06 | Canceled | Madison |
| AMERICAN GENERAL EQUITY SERVICES CORPORATION | 723484 | 1988-09-15 | Canceled | Madison |
| AMERICAN GENERAL FINANCE, INC. | 565156 | 1964-05-25 | Merged | Gulfport |
| AMERICAN GENERAL FINANCE, INC. | 555515 | 1986-08-08 | Canceled | Gulfport |
| AMERICAN GENERAL FINANCE, INC. | 697830 | 2001-02-08 | — | Madison |
| AMERICAN GENERAL FINANCIAL ADVISORS, INC. | 679420 | 1997-02-12 | — | Gulfport |
| AMERICAN GENERAL HOSPITALITY OF MISSISSIPPI, INC. | 572048 | 1990-05-11 | Dissolved | DALLAS |
| American General Insurance Agency, Inc. | 979119 | 2011-02-25 | Active | Madison |
| AMERICAN GENERAL INTERNATIONAL CORPORATION | 577032 | 1990-12-17 | Dissolved | GREENVILLE |
| AMERICAN GENERAL LEASING & FINANCING CORP. | 433689 | 1972-10-09 | Canceled | Houston |
| American General Life Companies, LLC | 860561 | 2004-09-03 | — | Madison |
| American General Life Insurance Company | 1040543 | 2014-05-06 | Active | Madison |
| American General Mortgage Corporation | 938775 | 2008-09-26 | Dissolved | Madison |
| AMERICAN GENERAL RETIREMENT SERVICES COMPANY | 701781 | 1997-03-18 | — | Gulfport |
| AMERICAN GENERAL SECURITIES INCORPORATED | 511069 | 1983-08-05 | Canceled | Madison |
| AMERICAN GENERAL SUPPLIES, INC. | 645304 | 1997-07-31 | Dissolved | — |
| AMERICAN GENERAL SUPPLIES, INC. | 648839 | 1997-11-03 | Revoked | DALLAS |
| AMERICAN GENERAL, INC. | 433688 | 1970-12-18 | — | — |
| AMERICAN GENETIC ENGINEERING SERVICES, INC. | 433690 | 1981-03-13 | Merged | — |
| AMERICAN GENETICS ENGINEERING SERVICES, INC. | 307515 | 1981-08-14 | Revoked | WILMINGTON |
| American Gent Barbershop limited liability company | 1257693 | 2021-01-31 | Active | starkville |
| American Gentleman LLC | 1390400 | 2023-04-26 | Dissolved | Tupelo |
| AMERICAN GEORGETOWN, INC. | 733690 | 2003-05-15 | Active | Gulfport |
| American Geothermal Systems, LLC | 933180 | 2008-06-05 | Dissolved | — |
| AMERICAN GIN CORPORATION | 640329 | 1997-02-10 | Dissolved | — |
| AMERICAN GINNER AND COTTON REPORTING AGENCY | 433692 | 1898-04-22 | Inactive | — |
| American Girl Brands, LLC | 1163023 | 2018-11-30 | Active | Madison |