| ALDRET SECURITY & PATROL AGENCY, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Apr 16, 1980 | Inactive |
| STEPHENSON-MCCUTHCHEON CONSTRUCTION, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Apr 24, 1980 | Inactive |
| RALLY TIRE CO.Marathon, FL · Inactive | Marathon, FL | Corporation | May 1, 1980 | Inactive |
| KEY-ZY PRODUCTS, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | May 5, 1980 | Inactive |
| JENI-LYN, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | May 12, 1980 | Inactive |
| STAR CONSTRUCTION & DEVELOPMENT CORPORATIONMarathon, FL · Inactive | Marathon, FL | Corporation | May 12, 1980 | Inactive |
| S.J.G. OCEANS MARATHON INC.Marathon, FL · Inactive | Marathon, FL | Corporation | May 27, 1980 | Inactive |
| CARIBBEAN CLEARING CORPORATIONMarathon, FL · Inactive | Marathon, FL | Corporation | Jun 2, 1980 | Inactive |
| PALM COURT CONSULTANTS, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 9, 1980 | Inactive |
| PROVINCIAL OF FLORIDA, INC.Duck Key, FL · Inactive | Duck Key, FL | Corporation | Jun 23, 1980 | Inactive |
| CAMERON PEST CONTROL, INC.Duck Key, FL · Inactive | Duck Key, FL | Corporation | Jun 24, 1980 | Inactive |
| EDDOL OF MARATHON, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 26, 1980 | Inactive |
| COFFINS PATCH ENTERPRISES, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 20, 1980 | Inactive |
| MARITIME REPAIR SERVICE, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 12, 1980 | Inactive |
| SEVEN MILE SERVICE, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 29, 1980 | Inactive |
| NEPTUNES OF THE KEYS INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jul 21, 1980 | Inactive |
| WAYNE A. MOCCIA, M.D., P.A.Duck Key, FL · Inactive | Duck Key, FL | Corporation | Jul 21, 1980 | Inactive |
| 2700 COMPANY, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jul 23, 1980 | Inactive |
| A LA MODE, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Aug 15, 1980 | Inactive |
| HURRICANE AQUA CENTER, INC.Marathon, FL · Active | Marathon, FL | Corporation | Aug 15, 1980 | Active |
| HEALTH NUTS OF MARATHON, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Aug 19, 1980 | Inactive |
| VOITURES, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Aug 25, 1980 | Inactive |
| F.J.'S FACTORY OUTLET, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Sep 9, 1980 | Inactive |
| AMERICA COMMUNITY DEVELOPERS, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Sep 4, 1980 | Inactive |
| SOMBRERO QUEEN, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Sep 11, 1980 | Inactive |
| LADY T, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Sep 15, 1980 | Inactive |
| W.R.M. MARINE, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Sep 23, 1980 | Inactive |
| THE SEEKER'S QUEST, INC.Duck Key, FL · Inactive | Duck Key, FL | Corporation | Jun 11, 1981 | Inactive |
| STEVEN J. SMITH, M.D., P.A.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 22, 1981 | Inactive |
| BLUE SKIES OF MARATHON, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 25, 1981 | Inactive |
| ACOUSTIC CLEAN OF FLORIDA, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jun 30, 1981 | Inactive |
| D'ASCANIO CORPORATIONMarathon, FL · Inactive | Marathon, FL | Corporation | Jun 30, 1981 | Inactive |
| CENTRAL KEYS ENTERPRISES, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jul 13, 1981 | Inactive |
| CLYDE DANIELS, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jul 14, 1981 | Inactive |
| CHARLES KNIGHTON & ASSOCIATES, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jul 23, 1981 | Inactive |
| LOBSTER TRAP CATERING, INC.Marathon, FL · Inactive | Marathon, FL | Corporation | Jul 30, 1981 | Inactive |
| PRESBYTERIAN KIRK OF THE KEYS INCMarathon, FL · Active | Marathon, FL | Nonprofit | Mar 30, 1960 | Active |
| THE CONCH KEY VOLUNTEER FIRE DEPARTMENT AND RESCUE SQUAD, INC.Marathon, FL · Inactive | Marathon, FL | Nonprofit | Jul 21, 1960 | Inactive |
| FISHERMEN'S HOSPITAL, INC.Marathon, FL · Inactive | Marathon, FL | Nonprofit | Aug 4, 1960 | Inactive |
| MARATHON LODGE NO 1058 LOYAL ORDER OF MOOSE, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Apr 28, 1961 | Active |
| MARATHON ELKS CLUB, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Oct 19, 1961 | Active |
| THE HARRY E. NORRIS MEMORIAL FUND, INC.Marathon, FL · Inactive | Marathon, FL | Nonprofit | Feb 5, 1962 | Inactive |
| FIRST BAPTIST CHURCH OF MARATHON, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Aug 19, 1963 | Active |
| MARATHON METHODIST COMMUNITY CHURCH, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Sep 20, 1965 | Active |
| THE MARATHON GUIDES ASSOCIATION INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Jan 10, 1966 | Inactive |
| SEAVIEW CONDOMINIUM APTS. INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Apr 19, 1966 | Active |
| SOMBRERO COUNTRY CLUB, INC.Marathon, FL · Inactive | Marathon, FL | Nonprofit | Apr 25, 1966 | Inactive |
| MARTIN LUTHER CHAPEL, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Jul 12, 1966 | Active |
| MARATHON POST NO. 154, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Sep 9, 1966 | Active |
| GREATER MARATHON CHAMBER OF COMMERCE, INC.Marathon, FL · Active | Marathon, FL | Nonprofit | Jul 26, 1967 | Active |