Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Forks Pond Dam | Dam | 6 | Wicomico | 38 19 48 N | 075 35 53 W |
| Forrest Branch | Stream | | Anne Arundel | 38 53 11 N | 076 32 27 W |
| Forrest Hall | Locale | 47 | St. Mary's | 38 24 55 N | 076 43 01 W |
| Forrest Hall Branch | Stream | | St. Mary's | 38 23 09 N | 076 45 30 W |
| Forrest Hall Estates | Populated Place | 50 | St. Mary's | 38 25 44 N | 076 44 01 W |
| Forrest Landing Cove | Bay | 3 | St. Mary's | 38 21 03 N | 076 31 38 W |
| Forrest Sherman Field | Park | 2 | Anne Arundel | 38 59 20 N | 076 29 20 W |
| Forsythe | Populated Place | 187 | Washington | 39 40 35 N | 077 59 16 W |
| Fort Armistead (historical) | Military (Historical) | 9 | Baltimore (city) | 39 12 32 N | 076 32 03 W |
| Fort Armistead Park | Park | 7 | Baltimore (city) | 39 12 29 N | 076 32 14 W |
| Fort Carroll | Park | 2 | Baltimore | 39 12 52 N | 076 31 10 W |
| Fort Carroll Light | Locale | 2 | Baltimore | 39 12 52 N | 076 31 10 W |
| Fort Cumberland (historical) | Military (Historical) | 207 | Allegany | 39 39 02 N | 078 45 57 W |
| Fort Deterick | Populated Place | 107 | Frederick | 39 26 07 N | 077 25 43 W |
| Fort Duncan (historical) | Military (Historical) | 193 | Washington | 39 20 30 N | 077 45 01 W |
| Fort Foote (historical) | Military (Historical) | 28 | Prince George's | 38 46 00 N | 077 01 40 W |
| Fort Foote Baptist Church | Church | 47 | Prince George's | 38 46 27 N | 077 00 51 W |
| Fort Foote Elementary School | School | 47 | Prince George's | 38 46 32 N | 077 00 17 W |
| Fort Foote Estates | Populated Place | 68 | Prince George's | 38 44 29 N | 076 58 31 W |
| Fort Foote Park | Park | 30 | Prince George's | 38 46 04 N | 077 01 44 W |
| Fort Foote Village | Populated Place | 41 | Prince George's | 38 46 11 N | 077 01 03 W |
| Fort Frederick (historical) | Military (Historical) | 144 | Washington | 39 36 37 N | 078 00 13 W |
| Fort Frederick State Park | Park | 143 | Washington | 39 36 36 N | 078 00 12 W |
| Fort Garrison Elementary School | School | 153 | Baltimore | 39 24 02 N | 076 42 13 W |
| Fort George G Mead Junction | Populated Place | 55 | Howard | 39 07 33 N | 076 47 21 W |
| Fort Hill | Summit | 485 | Allegany | 39 31 07 N | 078 54 08 W |
| Fort Hill | Summit | 35 | Calvert | 38 26 08 N | 076 28 41 W |
| Fort Hill | Summit | 819 | Garrett | 39 30 47 N | 079 12 24 W |
| Fort Hill High School | School | 269 | Allegany | 39 38 38 N | 078 44 53 W |
| Fort Holabird (historical) | Military (Historical) | 6 | Baltimore (city) | 39 16 00 N | 076 32 01 W |
| Fort Holabird Industrial Park | Locale | 7 | Baltimore (city) | 39 16 09 N | 076 32 11 W |
| Fort Howard | Populated Place | 5 | Baltimore | 39 12 26 N | 076 26 42 W |
| Fort Howard (historical) | Military (Historical) | 2 | Baltimore | 39 11 54 N | 076 26 37 W |
| Fort Howard Community Church | Church | 5 | Baltimore | 39 12 33 N | 076 26 36 W |
| Fort Howard Park | Park | 1 | Baltimore | 39 11 57 N | 076 26 24 W |
| Fort Howard Post Office | Post Office | 5 | Baltimore | 39 12 31 N | 076 26 37 W |
| Fort Howard School | School | 2 | Baltimore | 39 12 36 N | 076 26 32 W |
| Fort Howard Veterans Hospital | Hospital | 3 | Baltimore | 39 11 57 N | 076 26 44 W |
| Fort Hoyle (historical) | Military (Historical) | 6 | Harford | 39 23 18 N | 076 18 05 W |
| Fort Lincoln Cemetery | Cemetery | 17 | Prince George's | 38 55 47 N | 076 57 04 W |
| Fort McHenry Anchorage | Harbor | -3 | Anne Arundel | 39 14 24 N | 076 33 41 W |
| Fort McHenry Angle | Bend | -3 | Baltimore | 39 15 25 N | 076 34 23 W |
| Fort McHenry Channel | Channel | -3 | Baltimore (city) | 39 14 37 N | 076 33 22 W |
| Fort McHenry National Monument and Historic Shrine | Park | 9 | Baltimore (city) | 39 15 47 N | 076 34 47 W |
| Fort Meade Golf Course | Locale | 56 | Anne Arundel | 39 06 16 N | 076 45 09 W |
| Fort Meade Sewage Disposal Plant | Locale | 28 | Anne Arundel | 39 03 36 N | 076 43 39 W |
| Fort Pendleton | Populated Place | 798 | Garrett | 39 17 43 N | 079 22 27 W |
| Fort Point | Cape | 0 | Queen Anne's | 39 04 03 N | 076 05 13 W |
| Fort Point | Cape | 4 | St. Mary's | 38 08 16 N | 076 26 15 W |
| Fort Point Station (historical) | Locale | 9 | Queen Anne's | 39 04 21 N | 076 05 41 W |
| Fort Severn (historical) | Military (Historical) | 4 | Anne Arundel | 38 59 02 N | 076 29 04 W |
| Fort Smallwood (historical) | Military (Historical) | 1 | Anne Arundel | 39 09 58 N | 076 28 41 W |
| Fort Smallwood Elementary School | School | 24 | Anne Arundel | 39 07 59 N | 076 28 33 W |
| Fort Smallwood Park | Park | 3 | Anne Arundel | 39 09 48 N | 076 28 48 W |
| Fort Smallwood School | School | 27 | Anne Arundel | 39 08 14 N | 076 29 52 W |
| Fort Stokes (historical) | Military (Historical) | 3 | Talbot | 38 46 00 N | 076 05 59 W |
| Fort Tonoloy State Park | Park | 157 | Washington | 39 41 45 N | 078 11 59 W |
| Fort Washington | Populated Place | 32 | Prince George's | 38 42 26 N | 077 01 23 W |
| Fort Washington (historical) | Military (Historical) | 27 | Prince George's | 38 42 39 N | 077 02 06 W |
| Fort Washington Church | Church | 19 | Prince George's | 38 44 14 N | 077 00 09 W |
| Fort Washington Estates | Populated Place | 34 | Prince George's | 38 42 27 N | 077 01 23 W |
| Fort Washington Forest | Populated Place | 52 | Prince George's | 38 42 53 N | 076 58 55 W |
| Fort Washington Forest Elementary School | School | 62 | Prince George's | 38 42 32 N | 076 59 08 W |
| Fort Washington Light | Locale | -4 | Prince George's | 38 42 44 N | 077 02 13 W |
| Fort Washington Marina | Locale | -3 | Prince George's | 38 42 09 N | 077 01 30 W |
| Fort Washington National Park | Park | 38 | Prince George's | 38 42 39 N | 077 01 45 W |
| Fort Washington Post Office | Post Office | 16 | Prince George's | 38 43 48 N | 076 59 30 W |
| Fort Washington Shopping Center | Locale | 40 | Prince George's | 38 44 39 N | 076 59 37 W |
| Fort Washington United Methodist Church | Church | 57 | Prince George's | 38 42 45 N | 076 59 27 W |
| Fort Worthington School | School | 44 | Baltimore (city) | 39 18 28 N | 076 34 44 W |
| Fortney Mobile Home Park | Populated Place | 200 | Washington | 39 42 19 N | 077 43 07 W |
| Fortune Parc Industrial Park | Locale | 110 | Montgomery | 39 03 34 N | 077 09 33 W |
| Forty West Shopping Center | Locale | 153 | Baltimore | 39 16 58 N | 076 45 19 W |
| Fossil Ravine | Valley | 45 | Anne Arundel | 38 51 44 N | 076 36 54 W |
| Foster Branch | Populated Place | 21 | Harford | 39 24 30 N | 076 20 19 W |
| Foster Branch | Stream | | Harford | 39 23 46 N | 076 20 53 W |
| Foster Pond | Reservoir | 6 | Anne Arundel | 39 02 16 N | 076 31 19 W |
| Fosters Neck | Locale | 5 | St. Mary's | 38 15 13 N | 076 48 15 W |
| Fountain Baptist Church | Church | 12 | Baltimore (city) | 39 17 52 N | 076 36 04 W |
| Fountain Cemetery | Cemetery | 19 | Kent | 39 17 00 N | 076 02 17 W |
| Fountain Church | Church | 20 | Kent | 39 16 57 N | 076 02 16 W |
| Fountain Dale | Populated Place | 201 | Frederick | 39 26 02 N | 077 30 43 W |
| Fountain Glen | Populated Place | 115 | Harford | 39 32 02 N | 076 18 23 W |
| Fountain Green | Populated Place | 112 | Harford | 39 32 50 N | 076 18 49 W |
| Fountain Green Estates | Populated Place | 144 | Harford | 39 34 17 N | 076 19 59 W |
| Fountain Green Heights | Populated Place | 104 | Harford | 39 32 32 N | 076 19 11 W |
| Fountain Green Plaza Shopping Center | Locale | 99 | Harford | 39 32 39 N | 076 19 24 W |
| Fountain Head | Populated Place | 187 | Washington | 39 40 09 N | 077 42 47 W |
| Fountain Head Country Club | Locale | 189 | Washington | 39 40 31 N | 077 42 58 W |
| Fountain Head Heights | Populated Place | 178 | Washington | 39 40 26 N | 077 42 26 W |
| Fountain Mills | Populated Place | 176 | Frederick | 39 20 29 N | 077 16 05 W |
| Fountain Rock | Populated Place | 87 | Frederick | 39 28 29 N | 077 22 19 W |
| Fountain Rock Manor (subdivision) | Populated Place | 104 | Frederick | 39 29 30 N | 077 20 35 W |
| Fountain Rock School | School | 161 | Washington | 39 34 17 N | 077 46 22 W |
| Fountain Rock Spring | Spring | 85 | Frederick | 39 28 31 N | 077 22 09 W |
| Fountain Rock Spring Park | Park | 85 | Frederick | 39 28 33 N | 077 22 07 W |
| Fountain Valley | Populated Place | 215 | Carroll | 39 36 18 N | 077 02 16 W |
| Fountain Valley | Populated Place | 207 | Carroll | 39 35 49 N | 077 02 47 W |
| Fountain View | Populated Place | 210 | Montgomery | 39 14 49 N | 077 15 27 W |
| Fountaindale School | School | 176 | Washington | 39 40 06 N | 077 43 05 W |
| Fountaindale South | Populated Place | 202 | Frederick | 39 25 45 N | 077 30 54 W |
| Four Corners | Locale | 11 | Queen Anne's | 39 15 05 N | 075 50 52 W |
| Four Corners | Populated Place | 17 | Caroline | 38 57 48 N | 075 45 54 W |
| Four Corners | Populated Place | 103 | Montgomery | 39 01 13 N | 077 00 46 W |
| Four Corners Elementary School (historical) | School | 112 | Montgomery | 39 01 28 N | 077 01 03 W |
| Four Corners Library | Building | 102 | Montgomery | 39 01 14 N | 077 00 43 W |
| Four County Farm | Populated Place | 259 | Frederick | 39 21 20 N | 077 10 18 W |
| Four Locks | Populated Place | 112 | Washington | 39 36 56 N | 077 56 50 W |
| Four Locks Picnic Area | Locale | 112 | Washington | 39 36 53 N | 077 56 49 W |
| Four Locks Ranger Station | Locale | 122 | Washington | 39 36 55 N | 077 56 57 W |