Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Twomile Branch | Stream | | Lafayette | 29 55 11 N | 083 16 44 W |
| Twomile Creek | Stream | | Putnam | 29 36 34 N | 081 40 06 W |
| Twomile Lake | Lake | 33 | Polk | 27 44 29 N | 081 45 16 W |
| Twomile Pond | Lake | 33 | Putnam | 29 42 19 N | 082 01 28 W |
| Twomile Prairie Lake | Lake | 10 | Citrus | 28 58 38 N | 082 22 53 W |
| Tyler | Populated Place | 26 | Gilchrist | 29 39 04 N | 082 45 50 W |
| Tyler Lake | Lake | 8 | Volusia | 28 50 06 N | 081 09 36 W |
| Tyndall School | School | 9 | Bay | 30 04 59 N | 085 36 30 W |
| Tyner Bay | Swamp | 65 | Okaloosa | 30 55 55 N | 086 27 53 W |
| Tyner Branch | Stream | | Okaloosa | 30 55 38 N | 086 29 60 W |
| Tyre Creek | Stream | | Manatee | 27 35 19 N | 082 20 42 W |
| Tyrone Bryant Branch Library | Building | | Broward | 26 09 18 N | 080 10 12 W |
| Tyrone Elementary School | School | 5 | Pinellas | 27 47 38 N | 082 43 37 W |
| Tyrone Gardens Shopping Center | Locale | 6 | Pinellas | 27 46 56 N | 082 42 49 W |
| Tyrone Junior High School | School | 6 | Pinellas | 27 47 34 N | 082 43 29 W |
| Tyrone Railroad Station | Locale | 7 | Pinellas | 27 47 54 N | 082 44 12 W |
| Tyrone Square | Locale | 6 | Pinellas | 27 47 37 N | 082 43 59 W |
| Tysba Day Care and Learning Center | Building | | Miami-Dade | 25 53 04 N | 080 11 44 W |
| Tyson Creek | Stream | | Osceola | 27 59 00 N | 080 58 58 W |
| Tyson Lake | Lake | 24 | Bay | 30 24 17 N | 085 41 35 W |
| U F Plaza | Locale | 19 | Alachua | 29 31 09 N | 082 22 15 W |
| U-Lee Bend | Bend | 0 | Levy | 29 19 54 N | 083 05 30 W |
| U-Save Shopping Center | Locale | 7 | Okeechobee | 27 13 46 N | 080 49 57 W |
| Uceta Yard | Locale | 4 | Hillsborough | 27 57 35 N | 082 23 43 W |
| Uilmerton Pointe Plaza | Locale | 4 | Pinellas | 27 53 34 N | 082 43 49 W |
| Ukrainian Catholic Church Assumption of the Blessed Virgin Mary | Church | 2 | Miami-Dade | 25 46 56 N | 080 11 54 W |
| Uleta Park | Park | 2 | Miami-Dade | 25 55 47 N | 080 11 34 W |
| Uleta Park Community School | School | | Miami-Dade | 25 55 49 N | 080 11 33 W |
| Ullmore Cove | Bay | 0 | Wakulla | 29 58 51 N | 084 21 05 W |
| Ulmer Park | Park | 21 | Pinellas | 27 55 00 N | 082 47 29 W |
| Ulmerton | Populated Place | 5 | Pinellas | 27 53 41 N | 082 46 13 W |
| Ultramont Mall | Locale | 1 | Miami-Dade | 25 51 46 N | 080 19 54 W |
| UM/Canterbury Child Care Center | School | 4 | Miami-Dade | 25 43 11 N | 080 16 54 W |
| Umatilla | Populated Place | 30 | Lake | 28 55 46 N | 081 39 56 W |
| Umatilla Cemetery | Cemetery | 26 | Lake | 28 55 33 N | 081 40 50 W |
| Umatilla Elementary School | School | 29 | Lake | 28 55 44 N | 081 39 59 W |
| Umatilla High School | School | 30 | Lake | 28 55 51 N | 081 39 49 W |
| Umatilla Middle School | School | 30 | Lake | 28 56 22 N | 081 40 09 W |
| Umatilla Municipal Airport | Airport | 32 | Lake | 28 55 22 N | 081 39 05 W |
| Umbarger Church (historical) | Church | 51 | Alachua | 29 41 42 N | 082 20 48 W |
| Umbrella Island | Island | 0 | Collier | 26 00 09 N | 081 44 37 W |
| Umbrella Key | Island | 0 | Monroe | 25 08 07 N | 080 47 57 W |
| Under the Rainbow Montessori Learning Center | School | 5 | Hillsborough | 28 01 36 N | 082 26 56 W |
| Underhill Branch | Stream | | Volusia | 28 47 42 N | 081 00 42 W |
| Underhill Creek | Gut | 0 | Lee | 26 33 43 N | 082 03 19 W |
| Underhill Point | Cape | 0 | Lee | 26 33 58 N | 082 03 47 W |
| Underhill Sawgrass Pond | Swamp | 15 | Okeechobee | 27 26 26 N | 081 05 20 W |
| Underhill Slough | Gut | 0 | Volusia | 28 47 19 N | 081 02 00 W |
| Underwood Bay | Swamp | 37 | Holmes | 30 57 24 N | 085 32 08 W |
| Underwood Crossing | Populated Place | 58 | Holmes | 30 58 29 N | 085 35 01 W |
| Underwood Hill | Summit | 55 | Alachua | 29 49 38 N | 082 33 37 W |
| Unification Academy for Learning West | School | | Miami-Dade | 25 49 08 N | 080 12 40 W |
| Unification Academy of Learning 1st Campus | School | | Miami-Dade | 25 51 40 N | 080 13 30 W |
| Unification Child Care Center | Building | | Miami-Dade | 25 51 40 N | 080 13 30 W |
| Union | Populated Place | 68 | Walton | 30 48 14 N | 086 02 32 W |
| Union Academy | School | 33 | Polk | 27 53 34 N | 081 49 22 W |
| Union Baptist Church | Church | 23 | Alachua | 29 38 51 N | 082 36 49 W |
| Union Branch Church | Church | 32 | Jefferson | 30 37 26 N | 083 59 43 W |
| Union Branch Church | Church | 37 | Leon | 30 29 33 N | 084 06 46 W |
| Union Cemetery | Cemetery | 47 | Jefferson | 30 37 58 N | 083 59 60 W |
| Union Cemetery | Cemetery | 24 | Marion | 29 16 28 N | 082 11 50 W |
| Union Cemetery | Cemetery | 14 | Volusia | 29 01 17 N | 081 20 17 W |
| Union Chapel | Church | 79 | Gadsden | 30 33 20 N | 084 41 21 W |
| Union Church | Church | 30 | Columbia | 30 16 00 N | 082 42 51 W |
| Union Church | Church | 79 | Escambia | 30 54 58 N | 087 28 49 W |
| Union Church | Church | 30 | Gilchrist | 29 38 47 N | 082 40 55 W |
| Union Church | Church | 21 | Holmes | 30 50 20 N | 085 49 47 W |
| Union Church | Church | 17 | Levy | 29 30 17 N | 082 44 24 W |
| Union Church | Church | 1 | Martin | 27 09 49 N | 080 15 40 W |
| Union Church | Church | 6 | Pasco | 28 16 26 N | 082 42 41 W |
| Union Church | Church | 2 | Sarasota | 27 06 03 N | 082 26 11 W |
| Union Church | Church | 22 | Suwannee | 30 01 22 N | 082 53 39 W |
| Union City | Locale | 28 | Jackson | 30 38 05 N | 085 09 27 W |
| Union Congregational Church | Church | 3 | Palm Beach | 26 43 01 N | 080 03 09 W |
| Union County | Civil | 43 | Union | 30 02 31 N | 082 22 27 W |
| Union County Adult High School | School | 40 | Union | 30 01 06 N | 082 20 16 W |
| Union Grove School | School | 41 | Jackson | 30 53 37 N | 085 08 47 W |
| Union Hill Church | Church | 15 | Escambia | 30 25 52 N | 087 18 10 W |
| Union Hill Church | Church | 49 | Holmes | 30 56 04 N | 085 44 23 W |
| Union Hill Church | Church | 41 | Jackson | 30 47 32 N | 085 14 46 W |
| Union Hill School | School | 19 | Washington | 30 41 17 N | 085 41 44 W |
| Union Lake | Lake | 17 | Dixie | 29 48 10 N | 083 00 22 W |
| Union Lookout Tower | Tower | 43 | Union | 30 02 44 N | 082 23 31 W |
| Union Missionary Baptist Church | Church | 16 | Marion | 29 03 46 N | 082 27 04 W |
| Union Park | Populated Place | 25 | Orange | 28 34 05 N | 081 17 10 W |
| Union Park Church | Church | 20 | Orange | 28 34 14 N | 081 16 08 W |
| Union Park Junior High School | School | 18 | Orange | 28 34 16 N | 081 14 55 W |
| Union Park School | School | 16 | Orange | 28 34 17 N | 081 14 58 W |
| Union Park United Methodist Church | Church | 23 | Orange | 28 34 01 N | 081 16 54 W |
| Union Progressive Baptist Church | Church | 5 | Duval | 30 21 46 N | 081 37 59 W |
| Union School | School | 21 | Holmes | 30 50 19 N | 085 49 43 W |
| Union School | School | 50 | Jackson | 30 52 53 N | 085 31 01 W |
| Union Station | Locale | 3 | Duval | 30 19 41 N | 081 40 16 W |
| Union Station | Locale | 6 | Hillsborough | 27 57 09 N | 082 27 02 W |
| Unitarian Church in Fort Lauderdale | Church | 2 | Broward | 26 09 51 N | 080 11 34 W |
| Unitarian Universalist Church Indian River | Church | 4 | St. Lucie | 27 17 26 N | 080 20 39 W |
| Unitarian Universalist Church of Clearwater | Church | 20 | Pinellas | 27 57 26 N | 082 46 14 W |
| Unitarian Universalist Church of Fort Myers | Church | 4 | Lee | 26 38 16 N | 081 51 54 W |
| Unitarian Universalist Church of Saint Petersburg | Church | 14 | Pinellas | 27 46 21 N | 082 39 04 W |
| Unitarian Universalist Church of Tallahassee | Church | 51 | Leon | 30 28 46 N | 084 16 40 W |
| Unitarian Universalist Church of Tallahassee | Church | 64 | Leon | 30 29 26 N | 084 16 35 W |
| Unitarian Universalist Congregation Church | Church | 0 | Collier | 26 08 06 N | 081 47 44 W |
| Unitarian Universalist Fellowship | Church | 6 | Manatee | 27 29 11 N | 082 35 34 W |
| Unitarian Universalist Fellowship Church | Church | 11 | Bay | 30 11 56 N | 085 40 05 W |
| Unitarian Universalist Fellowship Church | Church | 67 | Polk | 28 03 26 N | 081 58 19 W |
| Unitarian Universalist Fellowship of Marion | Church | 37 | Marion | 29 10 46 N | 082 07 04 W |
| Unitarian Universalists Church | Church | 22 | Citrus | 28 53 36 N | 082 28 10 W |
| United | Locale | 7 | Palm Beach | 26 54 48 N | 080 18 29 W |
| United American Freewill Baptist Church | Church | 45 | Polk | 28 00 41 N | 081 53 59 W |
| United Cerebral Palsy Association of Miami Day Care Center | Building | | Miami-Dade | 25 47 15 N | 080 13 09 W |