| FLORIDA EAST COAST RAILWAY COMPANYSt. Augustine, FL · Inactive | St. Augustine, FL | Corporation | May 28, 1892 | Inactive |
| FLORIDA EAST COAST DELIVERIES, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | May 13, 1971 | Inactive |
| RAILROAD CONCRETE CROSSTIE CORPORATIONSt. Augustine, FL · Inactive | St. Augustine, FL | Corporation | Sep 30, 1971 | Inactive |
| RAILROAD TRACK CONSTRUCTION CORPORATIONJacksonville, FL · Inactive | Jacksonville, FL | Corporation | Oct 8, 1973 | Inactive |
| FECR CARRIER, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Sep 17, 1980 | Inactive |
| FLAGLER DEVELOPMENT COMPANYJacksonville, FL · Inactive | Jacksonville, FL | Corporation | Aug 17, 1981 | Inactive |
| DADE COUNTY LAND HOLDING COMPANY, INC.St. Augustine, FL · Inactive | St. Augustine, FL | Corporation | Mar 12, 1982 | Inactive |
| FLAGLER DEVELOPMENT GROUP, INC.Coral Gables, FL · Inactive | Coral Gables, FL | Corporation | Apr 13, 1987 | Inactive |
| PE LAND HOLDINGS, LLCSt. Augustine, FL · Inactive | St. Augustine, FL | LLC | Jun 19, 2003 | Inactive |
| FECR LAND HOLDINGS, LLCJacksonville, FL · Inactive | Jacksonville, FL | LLC | Jan 4, 2006 | Inactive |
| FLAGLER COMMONS, LLCJacksonville, FL · Inactive | Jacksonville, FL | LLC | Jan 4, 2006 | Inactive |
| FLORIDA EAST COAST FOUNDATION, INC.St. Augustine, FL · Inactive | St. Augustine, FL | Nonprofit | Jun 24, 1988 | Inactive |
| FLAGLER INDUSTRIES, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Feb 3, 2000 | Inactive |
| FDC PE BUILDING I, INC.Saint Augustine, FL · Inactive | Saint Augustine, FL | Corporation | Sep 1, 2000 | Inactive |
| FDC PE BUILDING II, INC.Saint Augustine, FL · Inactive | Saint Augustine, FL | Corporation | Oct 26, 2000 | Inactive |
| FDC PE BUILDING III, INC.Saint Augustine, FL · Inactive | Saint Augustine, FL | Corporation | Oct 26, 2000 | Inactive |
| FLORIDA EXPRESS LOGISTICS, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Dec 1, 2000 | Inactive |
| FEC HIGHWAY SERVICES, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Dec 27, 2000 | Inactive |
| FLAGLER TRANSPORTATION SERVICES, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Apr 26, 2004 | Inactive |
| GCC WESTON HOTEL, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Apr 30, 1998 | Inactive |
| GCC WESTON OFFICE, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Apr 30, 1998 | Inactive |
| GCC WESTON HOLDINGS, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Apr 30, 1998 | Inactive |
| GCC BEACON 22, 23 & 24, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Mar 29, 1999 | Inactive |