Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Martin | Populated Place | 27 | Marion | 29 17 38 N | 082 11 25 W |
| Martin County | Civil | 8 | Martin | 27 05 01 N | 080 24 59 W |
| Martin County Adult Center | School | 3 | Martin | 27 11 50 N | 080 14 40 W |
| Martin County High School | School | 2 | Martin | 27 10 10 N | 080 15 02 W |
| Martin County Private School | School | 3 | Martin | 27 11 36 N | 080 14 54 W |
| Martin County Public Library | Building | 3 | Martin | 27 11 46 N | 080 14 39 W |
| Martin Cove | Bay | 0 | Indian River | 27 36 45 N | 080 20 59 W |
| Martin Hammock | Swamp | 39 | Hamilton | 30 36 14 N | 082 48 52 W |
| Martin Islands | Island | 10 | Gulf | 30 05 55 N | 085 15 32 W |
| Martin Lake | Lake | 22 | Washington | 30 31 26 N | 085 39 59 W |
| Martin Lakes | Reservoir | 39 | Okaloosa | 30 45 33 N | 086 35 19 W |
| Martin Luther King Elementary School | School | 3 | Miami-Dade | 25 50 21 N | 080 12 56 W |
| Martin Luther King Health Center | Building | | Miami-Dade | 25 28 07 N | 080 29 17 W |
| Martin Luther King Park | Park | 2 | Miami-Dade | 25 49 46 N | 080 15 04 W |
| Martin Luther King YMCA Day Care Center | Building | | Miami-Dade | 25 49 54 N | 080 13 48 W |
| Martin Marietta Heliport | Airport | 29 | Orange | 28 26 47 N | 081 27 08 W |
| Martin Memorial Hospital | Hospital | 3 | Martin | 27 11 25 N | 080 14 46 W |
| Martin Memorial Hospital Heliport | Airport | 0 | Martin | 27 12 13 N | 080 14 28 W |
| Martin Pond | Lake | 35 | Madison | 30 30 07 N | 083 26 16 W |
| Martin Pond | Lake | 38 | Okaloosa | 30 45 36 N | 086 35 31 W |
| Martin School | School | 3 | Miami-Dade | 25 38 11 N | 080 22 32 W |
| Martin Technical College | School | 2 | Miami-Dade | 25 46 45 N | 080 13 37 W |
| Martins Bay | Swamp | 43 | Holmes | 30 49 53 N | 085 39 17 W |
| Martins Island | Island | 2 | Nassau | 30 41 22 N | 081 31 32 W |
| Martins Mill Pond | Lake | 51 | Okaloosa | 30 50 55 N | 086 46 37 W |
| Marvin D Adams Waterway | Canal | 3 | Monroe | 25 08 16 N | 080 23 57 W |
| Marvin Key | Island | 0 | Monroe | 24 42 42 N | 081 38 40 W |
| Marvin Pond | Lake | 28 | Washington | 30 32 07 N | 085 31 29 W |
| Marvina | Populated Place | 7 | Hillsborough | 27 52 33 N | 082 13 31 W |
| Mary Ann Davis Grant | Civil | 3 | Duval | 30 09 09 N | 081 31 34 W |
| Mary Ann Davis Grant | Civil | 2 | Miami-Dade | 25 40 26 N | 080 09 19 W |
| Mary Ann Pond | Swamp | 42 | Jackson | 30 46 39 N | 085 21 51 W |
| Mary Branch | Stream | | Liberty | 30 14 29 N | 085 01 56 W |
| Mary Elizabeth Cemetery | Cemetery | 27 | Putnam | 29 37 55 N | 081 48 36 W |
| Mary Elizabeth Church | Church | 26 | Putnam | 29 37 56 N | 081 48 36 W |
| Mary Esther | Populated Place | 7 | Okaloosa | 30 24 36 N | 086 39 47 W |
| Mary Esther Elementary School | School | 6 | Okaloosa | 30 24 38 N | 086 39 27 W |
| Mary G Munroe Pond | Lake | 37 | Gadsden | 30 33 06 N | 084 26 33 W |
| Mary Help of Christmas School | School | 9 | Hillsborough | 27 59 19 N | 082 23 01 W |
| Mary Immaculate Academy | School | 2 | Miami-Dade | 25 48 21 N | 080 14 04 W |
| Mary Immaculate Catholic Church | Church | 0 | Palm Beach | 26 42 26 N | 080 02 59 W |
| Mary Immaculate High School | School | 3 | Monroe | 24 33 12 N | 081 47 58 W |
| Mary Karl Memorial Library - Dayton Beach Community College | Building | 28 | Pasco | 28 14 01 N | 082 10 49 W |
| Mary Lake | Lake | 15 | Leon | 30 22 19 N | 084 07 57 W |
| Mary Lou Lake | Lake | 18 | Hillsborough | 28 10 20 N | 082 29 49 W |
| Mary M Bethune Elementary School | School | 1 | Broward | 26 02 41 N | 080 09 17 W |
| Mary Point | Cape | 1 | Charlotte | 27 00 34 N | 081 59 05 W |
| Mary Pond | Lake | 42 | Jackson | 30 48 21 N | 085 20 07 W |
| Mary Poppins Kindergarten | School | 3 | Miami-Dade | 25 49 36 N | 080 14 39 W |
| Mary Queen of the Universe Catholic Shrine | Church | 37 | Orange | 28 39 41 N | 081 30 29 W |
| Mary Slough | Gut | 9 | Calhoun | 30 16 30 N | 085 03 59 W |
| Mary Smith Grant | Civil | 2 | Duval | 30 33 36 N | 081 41 52 W |
| Mary Smith Grant | Civil | 4 | Duval | 30 30 03 N | 081 28 29 W |
| Marybelle Church | Church | 27 | Suwannee | 30 18 41 N | 083 03 19 W |
| Maryhill School | School | 12 | Duval | 30 20 12 N | 081 33 40 W |
| Maryland Shoal | Bar | -3 | Monroe | 24 30 50 N | 081 33 57 W |
| Marymount Playground | Park | 21 | Pinellas | 27 58 17 N | 082 45 27 W |
| Marys Lake | Lake | 10 | Hillsborough | 27 42 19 N | 082 30 40 W |
| Marys Lake Pass | Channel | -1 | Hillsborough | 27 42 24 N | 082 30 44 W |
| Marys Point | Cape | -1 | Hillsborough | 27 41 48 N | 082 30 58 W |
| Marysville | Populated Place | 13 | Calhoun | 30 17 41 N | 085 05 54 W |
| Marywood Cemetery | Cemetery | 4 | Bay | 30 05 54 N | 085 37 50 W |
| Masaryktown | Populated Place | 19 | Hernando | 28 26 30 N | 082 27 25 W |
| Masaryktown Cemetery | Cemetery | 18 | Hernando | 28 26 04 N | 082 27 21 W |
| Mascotte | Populated Place | 41 | Lake | 28 34 42 N | 081 53 12 W |
| Mash Branch | Stream | | Santa Rosa | 30 43 53 N | 087 08 59 W |
| Mashes Island | Island | 1 | Wakulla | 29 58 51 N | 084 21 52 W |
| Mason | Populated Place | 30 | Columbia | 30 02 24 N | 082 35 52 W |
| Mason Bay | Swamp | 8 | Marion | 29 17 55 N | 081 52 52 W |
| Mason Branch | Stream | | Putnam | 29 44 25 N | 081 34 10 W |
| Mason Branch | Stream | | Santa Rosa | 30 50 04 N | 086 54 14 W |
| Mason Chapel | Church | 31 | Putnam | 29 37 54 N | 081 52 52 W |
| Mason Creek | Stream | | Citrus | 28 45 04 N | 082 40 54 W |
| Mason Island | Island | 0 | Lee | 26 33 11 N | 082 07 11 W |
| Mason Lake | Lake | 29 | Putnam | 29 39 57 N | 081 58 56 W |
| Mason Landing | Locale | 6 | Okaloosa | 30 38 32 N | 086 47 10 W |
| Massachusetts Avenue Baptist Church | Church | 11 | Volusia | 29 01 31 N | 081 18 29 W |
| Massalene School | School | 44 | Washington | 30 30 49 N | 085 39 15 W |
| Massalina Bayou | Bay | 0 | Bay | 30 09 16 N | 085 39 21 W |
| Massey Ranch | Locale | 2 | Volusia | 28 58 24 N | 080 56 26 W |
| Massey Ranch Airpark | Airport | 3 | Volusia | 28 58 44 N | 080 55 29 W |
| Mast Academy High School | School | | Miami-Dade | 25 44 20 N | 080 09 59 W |
| Master Key of Countryside Shopping Center | Locale | 20 | Pinellas | 27 58 07 N | 082 46 30 W |
| Masters Bayou | Bay | -1 | Pinellas | 27 51 43 N | 082 36 49 W |
| Masters Island | Island | 10 | St. Johns | 29 57 07 N | 081 23 26 W |
| Masters Landing | Locale | 0 | Lee | 26 33 37 N | 082 04 46 W |
| Matanzas Inlet | Channel | 3 | St. Johns | 29 42 21 N | 081 13 42 W |
| Matanzas Pass | Channel | -3 | Lee | 26 27 03 N | 081 55 51 W |
| Matanzas River | Stream | | St. Johns | 29 54 50 N | 081 17 01 W |
| Matchett Cemetery | Cemetery | 23 | Sumter | 28 37 03 N | 082 06 44 W |
| Matchett Lake | Lake | 22 | Sumter | 28 36 41 N | 082 06 46 W |
| Matchett Point | Cape | 0 | Martin | 27 11 07 N | 080 16 05 W |
| Matecumbe | Populated Place | 3 | Monroe | 24 54 51 N | 080 38 19 W |
| Matecumbe Bight | Bay | 8 | Monroe | 24 52 19 N | 080 42 48 W |
| Matecumbe Harbor | Bay | 0 | Monroe | 24 51 03 N | 080 44 23 W |
| Matecumbe Keys | Island | 4 | Monroe | 24 52 01 N | 080 39 59 W |
| Mater Academy | School | | Miami-Dade | 25 51 36 N | 080 19 28 W |
| Mater Academy Charter High School | School | | Miami-Dade | 25 51 36 N | 080 19 28 W |
| Mater Academy Charter Middle School | School | | Miami-Dade | 25 51 36 N | 080 19 28 W |
| Mater Academy East Campus | School | | Miami-Dade | 25 46 10 N | 080 12 04 W |
| Mathers Bridge | Bridge | 0 | Brevard | 28 08 56 N | 080 36 22 W |
| Mathers Cove | Bay | 0 | Brevard | 27 53 29 N | 080 28 16 W |
| Matheson Hammock County Park | Park | 0 | Miami-Dade | 25 40 35 N | 080 15 51 W |
| Matheson Hammock Marina | Locale | | Miami-Dade | 25 40 43 N | 080 15 38 W |
| Mathews Bridge | Bridge | -23 | Duval | 30 19 38 N | 081 37 03 W |
| Mathews Island | Island | 2 | Duval | 30 21 09 N | 081 26 27 W |
| Mathews Park | Park | 30 | Orange | 28 34 46 N | 081 22 43 W |
| Mathison Creek | Stream | | Okaloosa | 30 46 37 N | 086 37 24 W |
| Matlacha | Populated Place | 0 | Lee | 26 37 47 N | 082 04 15 W |
| Matlacha Pass | Channel | -3 | Lee | 26 37 00 N | 082 03 34 W |