| American Emergency Response LLC | 909831 | 2007-04-03 | Dissolved | — |
| AMERICAN EMPIRE LIFE INSURANCE COMPANY | 433642 | 1967-05-11 | — | JACKSON |
| AMERICAN EMPLOYEE LEASING, INC. | 680404 | 1999-12-28 | Revoked | PENSACOLA |
| AMERICAN EMPLOYEES ASSOCIATION, INCORPORATED | 564247 | 1989-06-12 | Active | JACKSON |
| AMERICAN EMPLOYERS GROUP, INC. | 677702 | 1999-10-25 | — | Gulfport |
| AMERICAN EMPLOYERS GROUP, INC. | 702745 | 2001-06-01 | Canceled | Gulfport |
| American Employment Agency LLC | 1012646 | 2012-12-14 | Dissolved | HATTIESBURG |
| AMERICAN ENDOSCOPY SERVICES, INC. | 742280 | 2003-11-24 | Canceled | NASHVILLE |
| American Energy Advisors, LLC | 1077796 | 2015-10-14 | Dissolved | Jackson |
| AMERICAN ENERGY ASSETS LLC | 1066375 | 2015-04-30 | Active | Gulfport |
| AMERICAN ENERGY CO. | 307493 | 1970-06-17 | Revoked | Gulfport |
| AMERICAN ENERGY CONSULTANTS, INC. | 611448 | 1994-10-10 | Dissolved | Long Beach |
| AMERICAN ENERGY HOLDINGS, INC. | 585988 | 1992-02-10 | Revoked | Madison |
| AMERICAN ENERGY OPERATIONS, INC. | 577985 | 1991-01-29 | Revoked | — |
| AMERICAN ENERGY SERVICES, INC. | 574991 | 1990-09-19 | Revoked | Gulfport |
| AMERICAN ENERGY SERVICES, INC. | 522093 | 1985-04-08 | Revoked | — |
| American Energy Solutions, LLC | 1178033 | 2019-05-13 | Dissolved | Southaven |
| American Energy Solutions, LLC | 1388910 | 2023-04-17 | Dissolved | OLIVE BRANCH |
| AMERICAN ENGINEERING AND SURVEYING, INC. | 512078 | 1983-09-29 | — | MADISON |
| AMERICAN ENGINEERING SERVICE, INC. | 511829 | 1983-09-19 | Dissolved | — |
| American Engineering Testing, Inc | 1328558 | 2022-03-08 | Active | JACKSON |
| American Engineers, Inc. | 1399980 | 2023-06-28 | Withdrawn | RIDGELAND |
| American English Studio LLC | 1213614 | 2020-05-28 | Dissolved | Oxford |
| American Enterprises LLC | 851185 | 2004-02-12 | Dissolved | Brandon |
| AMERICAN ENTERPRISES, INC. | 307494 | 1966-12-27 | Dissolved | — |
| AMERICAN ENTERPRISES, INC. | 626906 | 1996-02-15 | Dissolved | — |
| American Environmental Aviation Inc | 1551612 | 2026-07-01 | Active | JACKSON |
| AMERICAN ENVIRONMENTAL AVIATION INC | 1280301 | 2021-05-17 | Withdrawn | JACKSON |
| American Environmental Group LTD. | 908729 | 2007-02-28 | Active | Gulfport |
| American Environmental Services of the South, Inc. | 703346 | 2001-06-14 | Canceled | — |
| American Environmental Services, Inc | 1153006 | 2018-08-19 | Active | Natchez |
| AMERICAN ENVIRONMENTAL SERVICES, INC. | 8703008 | 1979-06-25 | Dissolved | NATCHEZ |
| AMERICAN ENVIRONMENTAL SYSTEMS, INC. | 604929 | 1994-02-22 | Dissolved | HATTIESBURG |
| AMERICAN ENVIROTECH, LLC | 730237 | 2003-03-03 | Dissolved | — |
| AMERICAN EQUINE INSURANCE GROUP, LTD. | 704583 | 2001-07-16 | Active | Gulfport |
| AMERICAN EQUIPMENT COMPANY, INC. | 433643 | 1977-12-16 | — | Gulfport |
| AMERICAN EQUIPMENT COMPANY, INC. | 307496 | 1977-12-16 | Active | Madison |
| American Equipment HR, LLC | 1399232 | 2023-06-23 | Active | Gulfport |
| AMERICAN EQUIPMENT LEASING COMPANY | 307497 | 1973-07-02 | Canceled | BATON ROUGE |
| American Equipment Leasing Inc | 1315028 | 2022-01-01 | Active | Waynesboro |
| American Equipment Sales, LLC | 1392327 | 2023-05-08 | Active | Picayune |
| American Equipment Solutions, LLC | 1015672 | 2013-02-13 | Withdrawn | JACKSON |
| AMERICAN EQUITIES, INC. | 433645 | 1977-04-04 | Revoked | Gulfport |
| AMERICAN EQUITY INVESTMENT SERVICE COMPANY | 662415 | 1998-10-16 | Revoked | WEST DES MOINES |
| American Equity Mortgage, Inc. | 866914 | 2005-01-27 | Canceled | Madison |
| American Equity Partners LLC | 1518063 | 2025-11-21 | Active | JACKSON |
| American Equity Risk Services, LLC | 950482 | 2009-06-04 | Withdrawn | Gulfport |
| American Esoteric Laboratories, Inc. | 867997 | 2005-02-16 | Canceled | Gulfport |
| AMERICAN EUROCOPTER LLC | 735194 | 2003-06-18 | — | Gulfport |
| AMERICAN EXCAVATING, INC. | 590542 | 1992-08-24 | Dissolved | BYHALIA |