| MISSISSIPPI ENERGY MANAGEMENT, INC. | — | 439542 | 1979-04-26 | Dissolved | |
| MISSISSIPPI ENERGY PRODUCTION, INC. | — | 439543 | 1979-11-16 | Dissolved | |
| MISSISSIPPI FAMILY HOMES, INC. | — | 103866 | 1979-10-24 | Dissolved | |
| MISSISSIPPI FAST FOODS, INC. | — | 103878 | 1979-07-13 | Dissolved | |
| MISSISSIPPI FORKLIFT SERVICE, INC. | — | 103906 | 1979-10-18 | | BRANDON |
| MISSISSIPPI GASOHOL-ALCOHOL ASSOCIATION, INC. | — | 103935 | 1979-08-22 | Active | JACKSON |
| MISSISSIPPI GENERAL AGENCY, INC. | — | 103939 | 1979-02-12 | Dissolved | |
| MISSISSIPPI GRAIN SERVICES, INC. | — | 103946 | 1979-09-04 | Dissolved | |
| MISSISSIPPI GULF COAST COMMUNITY DEVELOPMENT CORPORATION, INC. | — | 103956 | 1979-10-09 | | GULFPORT |
| MISSISSIPPI GULF COAST GEM AND MINERAL SOCIETY, INC. | — | 103960 | 1979-08-31 | Active | Ocean Springs |
| MISSISSIPPI HEAD START PARENTS ASSOCIATION, INC. | — | 103983 | 1979-06-06 | Active | CLEVELAND |
| MISSISSIPPI HEALTH AGENCY ASSOCIATES, P.A. | — | 439684 | 1979-08-20 | Dissolved | |
| MISSISSIPPI HOMES INCORPORATED | — | 439701 | 1979-08-17 | Dissolved | MADISON |
| MISSISSIPPI HOSPICE CARE, INC. | — | 104026 | 1979-07-05 | Active | HATTIESBURG |
| MISSISSIPPI INDEPENDENT SERVICE STATION ASSOCIATION, INC. | — | 104048 | 1979-07-27 | | IUKA |
| MISSISSIPPI INDUSTRIAL CONTRACTORS, INC. | — | 104055 | 1979-01-03 | Dissolved | |
| MISSISSIPPI INSTITUTE FOR SMALL TOWNS, INC. | — | 104069 | 1979-03-23 | Active | JACKSON |
| MISSISSIPPI INSTITUTE OF ARTS AND LETTERS, INC. | — | 104065 | 1979-01-30 | Active | JACKSON |
| MISSISSIPPI INTERSTATE EXPRESS, INC. | — | 439754 | 1979-03-02 | | |
| MISSISSIPPI JUNIOR MISS PROGRAM, INC. | Professional services | 104089 | 1979-03-02 | Active | Meridian |
| MISSISSIPPI LAND AND EXPLORATION COMPANY, INC. | — | 104098 | 1979-10-24 | Dissolved | |
| MISSISSIPPI LAND AUCTION COMPANY, INC. | — | 439780 | 1979-11-21 | Dissolved | |
| MISSISSIPPI LAND AUCTION COMPANY, INC. | — | 439781 | 1979-11-21 | Dissolved | |
| MISSISSIPPI MARINE DEALER ASSOCIATION, INC. | — | 104143 | 1979-02-19 | | PASCAGOULA |
| MISSISSIPPI MICROS, INC. | — | 104171 | 1979-07-17 | Dissolved | |
| MISSISSIPPI MINOR EMERGENCY MEDICAL CORPORATION, P. A. | — | 104178 | 1979-11-14 | Merged | |
| MISSISSIPPI MORTGAGE COMPANY | — | 104188 | 1979-01-31 | Dissolved | |
| MISSISSIPPI MUNICIPAL ASSOCIATION, INC. | — | 104200 | 1979-04-11 | | JACKSON |
| MISSISSIPPI MUNICIPAL LEAGUE, INC. | Professional services | 673431 | 1979-04-11 | Active | Jackson |
| MISSISSIPPI MUSCADINE ASSOCIATION | — | 559359 | 1979-08-14 | Active | STARKVILLE |
| MISSISSIPPI NATURAL AIR, HEATING & COOLING, INC. | — | 104216 | 1979-01-19 | Dissolved | DUBLIN |
| MISSISSIPPI NATURAL GAS ASSOCIATION | — | 104217 | 1979-05-25 | Active | JACKSON |
| MISSISSIPPI PERINATAL ASSOCIATION, INC. | — | 104272 | 1979-07-27 | Dissolved | Ridgeland |
| MISSISSIPPI PHYSICIAN HEALTH PROGRAM | Other services | 743759 | 1979-04-27 | Active | Jackson |
| MISSISSIPPI POOL BUILDERS, INC. | — | 104290 | 1979-03-15 | Dissolved | |
| MISSISSIPPI PRESS ASSOCIATION, INC. | Other services | 104301 | 1979-04-26 | Active | Jackson |
| MISSISSIPPI PRINTING COMPANY, INC. | — | 104306 | 1979-06-27 | Dissolved | GREENWOOD |
| MISSISSIPPI PROFESSIONAL EDUCATORS, INC. | Other services | 104310 | 1979-07-13 | Active | Jackson |
| MISSISSIPPI PUMPING SERVICE, INC. | — | 440020 | 1979-12-19 | Dissolved | |
| MISSISSIPPI RECOVERING PHYSICIANS PROGRAM, INC. | — | 660491 | 1979-04-27 | | JACKSON |
| MISSISSIPPI RECREATION, INC. | — | 104335 | 1979-02-08 | Dissolved | |
| MISSISSIPPI RESOURCES, INC. | — | 104352 | 1979-09-24 | Dissolved | |
| MISSISSIPPI SHEET METAL, INC. | — | 440112 | 1979-12-07 | Dissolved | |
| MISSISSIPPI SOCCER ASSOCIATION YOUTH DIVISION, INC. | — | 104425 | 1979-05-18 | Active | JACKSON |
| MISSISSIPPI SOCCER ASSOCIATION, INC. | — | 104424 | 1979-06-08 | Active | JACKSON |
| MISSISSIPPI SOLAR ENERGY ASSOC.; A REGIONAL CHAPTER OF THE AMERICAN SECTION OF THE INTERNATIONAL SOLAR ENERGY ASSOC.* | — | 104444 | 1979-01-15 | Active | STARKVILLE |
| MISSISSIPPI SPORTS, INC. | — | 440130 | 1979-05-09 | Dissolved | |
| MISSISSIPPI STATE FEDERATION OF COLORED WOMEN'S CLUB HOUSING FOR THE ELDERLY IN CLINTON, INC. | — | 104473 | 1979-02-07 | Active | Ridgeland |
| MISSISSIPPI STATE FEDERATION OF COLORED WOMEN'S CLUB HOUSING FOR THE ELDERLY IN GRENADA, INC. | — | 104474 | 1979-02-07 | Active | Ridgeland |
| MISSISSIPPI STREET ROD ASSOCIATION, INC. | — | 104507 | 1979-02-28 | Active | JACKSON |