| STARKVILLE SURGICAL CLINIC, P.A. | — | 205398 | 1978-05-08 | Dissolved | |
| STARKVILLE YOUTH BASKETBALL, INC. | — | 205405 | 1978-11-06 | Active | STARKVILLE |
| STARNES HOMES, INC. | — | 205411 | 1978-02-22 | Dissolved | |
| STARR - MAC, INC. | — | 205414 | 1978-12-14 | Dissolved | CORINTH |
| STASCO MECHANICAL CONTRACTORS, INC. | — | 205415 | 1978-05-29 | Canceled | Gulfport |
| STATEWIDE CONSTRUCTION CO., INC. | — | 443602 | 1978-05-15 | Revoked | BIRMINGHAM |
| STATIONERS SUPPLIES, INC. | — | 205487 | 1978-02-07 | Dissolved | FOREST |
| STAUB ROBISON WILLIAMS ARCHITECTS, P.A. | — | 649165 | 1978-06-12 | | TUPELO |
| STAUB WILLIAMS ARCHITECTS, P.A. | — | 709534 | 1978-06-12 | | TUPELO |
| STAUB, ROBISON AND WILLIAMS, P.A. | — | 583810 | 1978-06-12 | | TUPELO |
| STAUB, ROBISON, WILLIAMS AND NICHOLS, P.A. | — | 573055 | 1978-06-12 | | TUPELO |
| STEDMAN CONSTRUCTION COMPANY, INC. | — | 205501 | 1978-01-04 | Dissolved | Natchez |
| STEDMAN-GAVIN BUILDERS, INC. | — | 443640 | 1978-01-04 | | |
| STEGALL FLOOR COMPANY, INC. | — | 205520 | 1978-02-01 | Dissolved | TERRY |
| STEPHEN CHAPEL MISSIONARY BAPTIST CHURCH, AN ECCLESIASTICAL CORPORATION | — | 205531 | 1978-11-29 | Active | COLUMBUS |
| STEPHENS BURIAL ASSOCIATION, INC. | Retail trade | 205538 | 1978-03-13 | Active | Madison |
| STEPHENS ENTERPRISES, INC. | — | 205539 | 1978-01-03 | Dissolved | |
| STEPHENS FUNERAL BENEFIT ASSOCIATION, INC. | Other services | 205540 | 1978-03-13 | Active | Madison |
| STEVE BOWLER MOTOR CO., INC. | — | 205560 | 1978-09-12 | Dissolved | COLUMBUS |
| STEVE BROOKS HOMES, INC. | — | 443736 | 1978-04-17 | Dissolved | |
| STEVENS INTERNATIONAL, INC. | — | 443750 | 1978-10-27 | | |
| STEVENSON'S TRUCKING, INC. | — | 205579 | 1978-05-03 | Dissolved | |
| STEWARDSHIP, INC. | — | 637126 | 1978-10-27 | Dissolved | Madison |
| STEWART A. SMITH BARBER AND BEAUTY SUPPLIES, INC. | — | 205580 | 1978-10-13 | Dissolved | MCCOMB |
| STEWART BUILDING & DESIGN, INCORPORATED | — | 205581 | 1978-03-28 | Dissolved | |
| STEWART DURA-VAN, INC. OF MISSISSIPPI | — | 205586 | 1978-03-03 | Dissolved | |
| STOCKSTILL EQUIPMENT CO., INC. | — | 205625 | 1978-07-17 | Dissolved | CARRIERE |
| STOP & SHOP GROCERY, INC. | — | 443863 | 1978-02-10 | Dissolved | |
| STOP 'N SHOP FOOD MARKET, INC. | — | 205697 | 1978-10-27 | Dissolved | LELAND |
| STOREY, TOMLINSON & COMPANY | — | 205705 | 1978-06-05 | | Gulfport |
| STOUT ENTERPRISES, INCORPORATED | — | 443880 | 1978-09-18 | Dissolved | BAY SAINT LOUIS |
| STOVALL HOMES, INC. | — | 443887 | 1978-04-04 | Dissolved | |
| STP CORPORATION | — | 109945 | 1978-05-08 | | Gulfport |
| STP OIL CORPORATION | — | 239235 | 1978-05-08 | | Gulfport |
| STRAYER ENTERPRISES, INC. | — | 443925 | 1978-01-26 | Dissolved | |
| STRICKLAND FURNITURE, INC. | Retail trade | 205753 | 1978-05-30 | Dissolved | HATTIESBURG |
| STRINGER & STRINGER, INC. | — | 443957 | 1978-07-31 | Dissolved | |
| STRODE CO. | — | 205770 | 1978-09-20 | Dissolved | RIDGELAND |
| STRONG RIVER CAMP & FARM, LTD. | Accommodation and food services | 205776 | 1978-03-27 | Active | PINOLA |
| STUART AUTO SALES, INC. | — | 205789 | 1978-01-23 | Dissolved | |
| SUBGRADE CONSTRUCTION COMPANY | — | 205833 | 1978-03-06 | | Gulfport |
| SUBSURFACE DISPOSAL CORPORATION | — | 205835 | 1978-06-26 | Revoked | Gulfport |
| SUBURBAN BUILDING CO., INC. | — | 551009 | 1978-03-01 | Dissolved | Flowood |
| SUBURBAN HOMES, INC. | — | 205841 | 1978-03-01 | | |
| SUCCESS TRUCK LEASING, INC. | — | 444072 | 1978-12-20 | Dissolved | |
| SUDBURY TRANSPORTATION, INC. | — | 205851 | 1978-08-03 | Dissolved | Wichita |
| SUDIE'S OF WOODLAND HILLS, INC. | — | 205855 | 1978-09-29 | Dissolved | |
| SUGAR FARM, INC. | — | 205859 | 1978-02-22 | Dissolved | SUMNER |
| SULLIVAN MECHANICAL CORPORATION | — | 444088 | 1978-09-07 | Dissolved | |
| SULLIVAN'S FURNITURE, INC. | — | 444092 | 1978-09-05 | Dissolved | |