| SOUTHEASTERN PAPERBOARD, INC. | Manufacturing | 361718 | 1981-12-29 | Active | Piedmont |
| SOUTHEASTERN REGIONAL PURCHASING CO., INC. | — | 342979 | 1981-06-30 | Revoked | |
| SOUTHEASTERN RESEARCH LABORATORIES, INC. | — | 340933 | 1981-01-08 | Inactive | |
| SOUTHEASTERN STEEL FABRICATORS, INC. | — | 341846 | 1981-03-26 | Active | |
| SOUTHEASTERN VISION SERVICE PLAN, INC. | — | 361165 | 1981-05-04 | Active | |
| SOUTHERN ADVISORY SERVICES CORPORATION | — | 342080 | 1981-04-14 | Revoked | |
| SOUTHERN ALCOHOL FUELS, INC. | — | 343879 | 1981-09-17 | Merged | |
| SOUTHERN AUTO PARTS OF DARLINGTON, INC. | — | 344238 | 1981-10-20 | Active | |
| SOUTHERN BUILDING MAINTENANCE CO., INC. | — | 361654 | 1981-11-25 | Inactive | |
| SOUTHERN CARPET CARE LTD. | — | 341479 | 1981-02-25 | Revoked | |
| SOUTHERN CHEMCO, INC. | — | 344184 | 1981-10-14 | Revoked | |
| SOUTHERN COATINGS & CHEMICAL COMPANY, INC. | — | 340887 | 1981-01-05 | Merged | |
| SOUTHERN COMBUSTION & CONTROLS | — | 361601 | 1981-10-28 | Revoked | |
| SOUTHERN COOKING, INC. | — | 341272 | 1981-02-06 | Revoked | |
| SOUTHERN DIRECTORY COMPANY, INC. | — | 340856 | 1981-01-02 | Revoked | |
| SOUTHERN ELECTRICAL DISTRIBUTORS, INC. | — | 361143 | 1981-04-27 | Merged | |
| SOUTHERN ELECTRONIC SYSTEMS, INC. | — | 344807 | 1981-12-14 | Revoked | |
| SOUTHERN ENERGY & COAL, INC. | — | 361142 | 1981-04-27 | Revoked | |
| SOUTHERN EXPRESS AIRLINES, INC. | — | 343137 | 1981-07-14 | Revoked | |
| SOUTHERN FAMILY HOMES, INC. | — | 361693 | 1981-12-15 | Revoked | |
| SOUTHERN FENCE, INC. | — | 341165 | 1981-01-28 | Revoked | |
| SOUTHERN HEALTH CARE AFFILIATES, INC. | — | 361261 | 1981-06-12 | Revoked | |
| SOUTHERN HOME & HARDWARE, INC. | — | 343934 | 1981-09-23 | Inactive | |
| SOUTHERN HOME CARE SERVICES, INC. | — | 361238 | 1981-06-02 | Active | |
| SOUTHERN HOMES OF UNION, INC. | — | 342667 | 1981-06-04 | Inactive | |
| SOUTHERN HOST SYSTEM, INC. | — | 361457 | 1981-08-26 | Revoked | |
| SOUTHERN INDUSTRIAL CONSTRUCTORS, INCORPORATED | — | 341339 | 1981-02-12 | Revoked | |
| SOUTHERN INTERNATIONAL HOTEL CORPORATION | — | 343286 | 1981-07-27 | Revoked | |
| SOUTHERN INVESTMENTS, INC. | — | 342595 | 1981-05-28 | Revoked | |
| SOUTHERN MANAGEMENT AGENCY, INC. | — | 341880 | 1981-03-30 | Active | |
| SOUTHERN MATERIAL HANDLING, INC. | — | 343584 | 1981-08-20 | Revoked | |
| SOUTHERN MEDICAL SERVICES, INC. | — | 361239 | 1981-06-02 | Active | |
| SOUTHERN METRO TELESYSTEMS, INC. | — | 344532 | 1981-11-13 | Revoked | |
| SOUTHERN MOTOR CLUB, INC. | — | 343611 | 1981-08-28 | Revoked | |
| SOUTHERN OUTDOOR ADVERTISING, INC. | — | 361218 | 1981-05-27 | Revoked | |
| SOUTHERN PONY EXPRESS, INC. | — | 341488 | 1981-02-26 | Revoked | |
| SOUTHERN PROPERTIES, INC. | — | 341820 | 1981-03-24 | Inactive | |
| SOUTHERN RESEARCH, INC. | — | 342338 | 1981-05-06 | Revoked | |
| SOUTHERN RESERVE ROOFING COMPANY | — | 361130 | 1981-04-22 | Inactive | |
| SOUTHERN RISK MANAGEMENT SERVICES, INC. | — | 342223 | 1981-04-28 | Revoked | |
| SOUTHERN SALES AND LEASING, INC. | — | 361321 | 1981-07-02 | Active | |
| SOUTHERN SCOOTER SUPPLY, INC. | — | 343447 | 1981-08-10 | Inactive | |
| SOUTHERN SEWING MACHINES, INC. | — | 343915 | 1981-09-22 | Inactive | |
| SOUTHERN SPA AND BATH, INC. | — | 343287 | 1981-07-27 | Inactive | |
| SOUTHERN SURPLUS INSURANCE, INC. OF SOUTH CAROLINA | — | 341179 | 1981-01-29 | Revoked | |
| SOUTHERN TEXTILE INTERNATIONAL CO., INC. | — | 342924 | 1981-06-25 | Inactive | |
| SOUTHERN TITLES OF COLUMBIA, INC. | — | 342593 | 1981-05-28 | Inactive | |
| SOUTHERN TRUCK AND SALVAGE, INC. | — | 343369 | 1981-08-03 | Inactive | |
| SOUTHERN URBAN STUDIES INSTITUTE, INC. | — | 341028 | 1981-01-15 | Revoked | |
| SOUTHERN WELDERS SUPPLY COMPANY, INC. | — | 343118 | 1981-07-21 | Active | |