| TONYS MERCHANDISING INCCoral Springs, FL · Active | Coral Springs, FL | Corporation | Apr 1, 2020 | Active |
| BOATHOUSE/CORAL LAGOON OPERATIONS, LLCMarathon, FL · Active | Marathon, FL | LLC | Dec 7, 2018 | Active |
| FELICIANO CONSULTING SERVICES LLCHomestead, FL · Active | Homestead, FL | LLC | Jul 29, 2020 | Active |
| ELITE CONCRETE CUTTING & DRILLING INC.Opa Locka, FL · Active | Opa Locka, FL | Corporation | Sep 14, 2009 | Active |
| 5868 OVER LLCPompano Beach, FL · Active | Pompano Beach, FL | LLC | Feb 6, 2025 | Active |
| OLGA EVGRAFOVA CPA, P.A.Pompano Beach, FL · Active | Pompano Beach, FL | Corporation | Apr 27, 2017 | Active |
| BRECO, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Nov 29, 1956 | Inactive |
| THE DEVELOPMENT CORPORATION OF THE FLORIDA KEYSMarathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Feb 22, 1960 | Inactive |
| COMP, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Aug 30, 1960 | Inactive |
| JOHN A. MARSHALL, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Oct 1, 1963 | Inactive |
| KEY MARINE EQUIPMENT COMPANYLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Not reported | Inactive |
| LUMSDEN OIL COMPANY, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Sep 14, 1965 | Inactive |
| V K CORPORATIONLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Dec 21, 1966 | Inactive |
| STIRRUP KEY MILLWORK INCLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Mar 16, 1970 | Inactive |
| ADAMS RIB INCLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Mar 11, 1970 | Inactive |
| MARATHON ELECTRIC INCLocation not reported, FL · Inactive | Location not reported, FL | Corporation | May 26, 1970 | Inactive |
| RONDEAU ELECTRIC INCLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Jul 21, 1970 | Inactive |
| VALERIE'S OF THE FLORIDA KEYS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jan 18, 1971 | Inactive |
| MONROE DEVELOPMENT CORPORATIONMarathon, FL · Inactive | Marathon, FL | Corporation | Jan 22, 1971 | Inactive |
| I.C.M. ENTERPRISES, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jun 30, 1971 | Inactive |
| BREEZE 94, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jun 23, 1972 | Inactive |
| HICKMAN-JOHNSON DEVELOPER, INC.Port Charlotte, FL · Inactive | Port Charlotte, FL | Corporation | Dec 4, 1973 | Inactive |
| BLACK & STEPP CORP.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jun 25, 1974 | Inactive |
| RESORT MANAGEMENT, INC. OF FLORIDAMarathon, FL · Inactive | Marathon, FL | Corporation | Mar 5, 1975 | Inactive |
| AAA ALUMINUM PRODUCTS, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jan 27, 1975 | Inactive |
| MARATHON RODE-RUNNER, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jun 9, 1975 | Inactive |
| FISHERMAN'S IDLE HOUR LOUNGE, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Dec 22, 1975 | Inactive |
| LONGHORN MARINA, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jul 27, 1976 | Inactive |
| RAINBOW BEND FISHING CLUB, INC.Grassy Key, FL · Inactive | Grassy Key, FL | Corporation | Jun 21, 1977 | Inactive |
| PROFESSIONAL COMMUNICATIONS, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Aug 19, 1977 | Inactive |
| DIVERSIFIED EQUITIES, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Aug 22, 1977 | Inactive |
| RICH - LENE FASHIONS, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Aug 17, 1977 | Inactive |
| KEY LIME VACATIONS, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Dec 15, 1977 | Inactive |
| MARATHON DEVELOPMENT, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Mar 3, 1978 | Inactive |
| DAVID BURKETT, P.A.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Apr 2, 1974 | Inactive |
| KEYS BOATS INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Sep 12, 1979 | Inactive |
| MOBEL INDUSTRIAL ENTERPRISES, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Oct 24, 1979 | Inactive |
| WARREN'S WRECKER SERVICE, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Dec 21, 1979 | Inactive |
| CASSIDY AIR, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Feb 18, 1980 | Inactive |
| FLYING BONEFISH SEAPLANE BASE, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Mar 18, 1980 | Inactive |
| ISLANDER HOMES OF THE KEYS, INC. `Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Apr 25, 1980 | Inactive |
| TOWE CONSTRUCTION, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jun 19, 1980 | Inactive |
| CAPT. CLIFF'S FISHERY, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Jul 17, 1980 | Inactive |
| TAXAC OF THE FLORIDA KEYS, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Corporation | Sep 8, 1980 | Inactive |
| MARATHON KEY HOPPERS SQUARE DANCE CLUB, INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Mar 5, 1971 | Inactive |
| CONTINENTAL CONDOMINIUM OF MARATHON, BUILDING NO. 2, INC.Key Colony Beach, FL · Inactive | Key Colony Beach, FL | Nonprofit | May 2, 1974 | Inactive |
| CONTINENTAL CONDOMINIUM OF MARATHON, BUILDING NO. 3, INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Nov 4, 1974 | Inactive |
| KEY LIME RESORT AND MARINA CLUB, INC.Marathon Shores, FL · Inactive | Marathon Shores, FL | Nonprofit | Jul 15, 1976 | Inactive |
| IGLESIA EVANGELICA MENONITA "LA ROCA" INC.Hialeah, FL · Inactive | Hialeah, FL | Nonprofit | Mar 17, 1978 | Inactive |
| KEY COLONY BEACH SAILFISH TOURNAMENT, INC.Marathon, FL · Inactive | Marathon, FL | Nonprofit | Oct 3, 1980 | Inactive |