| GUARDIAN CORPORATION | — | 203507 | 1978-08-10 | Dissolved | MANDEVILLE |
| GUEST CORPORATION | — | 203525 | 1978-06-09 | Dissolved | JACKSON |
| GULF AG-FLYING, INC. | — | 203538 | 1978-04-24 | Dissolved | |
| GULF CASCADE INVESTMENT PROPERTIES, INC. | — | 426571 | 1978-03-17 | Dissolved | |
| GULF COAST 4-WHEEL DRIVE, INC. | — | 203616 | 1978-08-28 | Dissolved | |
| GULF COAST ALLIED INDUSTRIES, INC. | — | 203555 | 1978-06-20 | Dissolved | BAY SAINT LOUIS |
| GULF COAST CENTER FOR NONVIOLENCE, INC. | Health care and social assistance | 712302 | 1978-10-27 | Active | Gulfport |
| GULF COAST CHAPTER - ROOSTER CHANNEL JUMPERS, INC. | — | 203580 | 1978-04-25 | Active | GULFPORT |
| GULF COAST CONSTRUCTION COMPANY, INC. | — | 203591 | 1978-07-13 | Dissolved | |
| GULF COAST GOURMET DINNER CLUB, INC. | — | 426665 | 1978-03-24 | Dissolved | |
| GULF COAST ITALIAN-AMERICAN CULTURAL SOCIETY, INC. | — | 203633 | 1978-02-15 | Active | Gulfport |
| GULF COAST LARCS, INCORPORATED | — | 203637 | 1978-05-16 | Active | BILOXI |
| GULF COAST LIMB AND BRACE, INC. | Health care and social assistance | 203639 | 1978-08-30 | Active | Gulfport |
| GULF COAST MANUFACTURING, INC. | — | 426704 | 1978-02-24 | Dissolved | |
| GULF COAST MARITIME MUSEUM, INC. | — | 203645 | 1978-04-24 | Active | GULFPORT |
| GULF COAST NEWS CO., INC. | — | 203655 | 1978-06-26 | Revoked | TUSCALOOSA |
| GULF COAST RADIOLOGY, P.A. | — | 203668 | 1978-06-19 | Merged | OCEAN SPRINGS |
| GULF COAST ROCKERS, INC. | — | 203674 | 1978-10-03 | | GULFPORT |
| GULF COAST RUNNING CLUB, INC. | Arts and entertainment | 501099 | 1978-08-22 | Active | GULFPORT |
| GULF COAST SITTER SERVICE, INC. | — | 203681 | 1978-04-03 | Dissolved | |
| GULF COAST WHOLESALE FENCE COMPANY | — | 203707 | 1978-09-28 | Dissolved | |
| GULF COAST WOMEN'S CENTER, INC. | — | 203709 | 1978-10-27 | | OCEAN SPRINGS |
| GULF FABRICATORS, INC. | — | 203724 | 1978-12-13 | Dissolved | |
| GULF INDUSTRIAL CONTRACTORS, INC. | — | 203741 | 1978-08-29 | Revoked | NEW ORLEANS |
| GULF SALES AND SUPPLY, INCORPORATED | Wholesale trade | 203787 | 1978-06-13 | Dissolved | Pascagoula |
| GULF SOUTH VENDING, INC. | — | 427034 | 1978-02-07 | Dissolved | |
| GULF STATES CHEMICAL CO., INC. | — | 203818 | 1978-07-11 | | HATTIESBURG |
| GULF STATES INTERNATIONAL, INC. | — | 611822 | 1978-07-11 | Dissolved | HATTIESBURG |
| GULF TIRE & SUPPLY COMPANY INC. | — | 203857 | 1978-05-11 | | Gulfport |
| GULF TRUCK PARTS, INC. | — | 203860 | 1978-08-11 | Dissolved | GULFPORT |
| GULF WELDING SUPPLY COMPANY | — | 427126 | 1978-05-10 | Revoked | BUILDING MOBILE |
| GULF-MOBILE BUILDERS, INC. | — | 426923 | 1978-04-07 | Dissolved | |
| GULFAIR INTERNATIONAL, INC. | — | 203868 | 1978-06-26 | Dissolved | |
| GULFPORT CULTURAL SOCIETY, INC. | — | 203909 | 1978-08-22 | | GULFPORT |
| GULFPORT HEALTH CLUB, INC. | — | 203926 | 1978-06-28 | Dissolved | |
| GULFPORT HYDRO CARBIDE CORPORATION | — | 427195 | 1978-07-19 | | Gulfport |
| GULFPORT INTERNATIONAL, INC. | — | 203932 | 1978-07-14 | Dissolved | |
| GULFPORT OIL INVESTMENTS, INC. | — | 427222 | 1978-10-27 | Dissolved | |
| GULFPORT STEVEDORING ASSOCIATION, INC. | Other services | 203957 | 1978-03-31 | Active | Gulfport |
| GULFWAY DRILLING AND EXPLORATION COMPANY, INC. | — | 203975 | 1978-11-06 | Dissolved | |
| GUNTOWN LIONS CLUB, INC. | — | 204002 | 1978-06-20 | Active | GUNTOWN |
| GUSMUS ELECTRIC COMPANY, INC. | Construction | 204010 | 1978-11-01 | Dissolved | Gulfport |
| GUSSIO REALTY, INC. | — | 427334 | 1978-12-13 | Dissolved | |
| GUY GREEN LIGHTING & BUILDING SUPPLY, INC. | — | 204019 | 1978-09-06 | Dissolved | JACKSON |
| GUY'S FOODS, INC. | — | 204021 | 1978-05-01 | Revoked | Madison |
| GUY'S SUZUKI UNLIMITED, INC. | — | 204024 | 1978-12-18 | Dissolved | |
| Garver-USA, Inc. | — | 662985 | 1978-04-06 | Dissolved | NORTH LITTLE ROCK |
| George A. May, Jr., D.D.S., P.a. | Health care and social assistance | 233148 | 1978-06-23 | Dissolved | SOUTHAVEN |
| Grady Sheffield Business Foundation for Hinds Junior College, Inc | — | 1099233 | 1978-05-12 | Active | |
| Graphic Packaging International, LLC | Manufacturing | 738639 | 1978-12-11 | Active | Madison |