Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| WAMD-AM (Aberdeen) | Tower | 26 | Harford | 39 30 35 N | 076 11 37 W |
| WAMD-AM (Hickory Hills) | Tower | 155 | Harford | 39 34 48 N | 076 20 49 W |
| Wampler Village | Populated Place | 9 | Baltimore | 39 20 15 N | 076 26 14 W |
| Wango | Populated Place | 13 | Wicomico | 38 19 17 N | 075 26 60 W |
| Wango Branch | Stream | | Wicomico | 38 19 39 N | 075 27 39 W |
| Wann Cove | Bay | -3 | Kent | 39 07 33 N | 076 08 47 W |
| WANN-AM (Annapolis) | Tower | 38 | Anne Arundel | 38 59 54 N | 076 35 57 W |
| WANN-AM (Annapolis) | Tower | 11 | Anne Arundel | 38 56 33 N | 076 28 52 W |
| WANN-AM (Annapolis) | Tower | 12 | Anne Arundel | 38 56 32 N | 076 28 53 W |
| Wapremander Creek | Stream | | Dorchester | 38 23 52 N | 075 51 18 W |
| Wapti Creek | Stream | | Cecil | 39 28 55 N | 075 58 09 W |
| War Memorial Plaza | Park | 5 | Baltimore (city) | 39 17 27 N | 076 36 34 W |
| Warburton Manor | Populated Place | 43 | Prince George's | 38 43 01 N | 076 59 37 W |
| Warburton Oaks | Populated Place | 17 | Prince George's | 38 44 06 N | 076 59 60 W |
| Warburton School (historical) | School | 110 | Cecil | 39 39 20 N | 075 55 28 W |
| Ward | Populated Place | 1 | Somerset | 37 59 30 N | 075 50 37 W |
| Ward | Populated Place | 1 | Somerset | 38 00 38 N | 075 48 52 W |
| Ward Ditch | Canal | 5 | Worcester | 38 00 57 N | 075 27 46 W |
| Ward Farm Estates | Populated Place | 147 | Montgomery | 39 13 36 N | 077 10 56 W |
| Ward Hall | Building | 5 | Anne Arundel | 38 58 48 N | 076 29 07 W |
| Ward Hall | Building | 124 | Baltimore | 39 23 45 N | 076 36 25 W |
| Wardens Landing | Populated Place | 132 | Howard | 39 12 58 N | 076 49 18 W |
| Wardour | Populated Place | 12 | Anne Arundel | 38 59 39 N | 076 29 54 W |
| Wardour Bluffs | Populated Place | 6 | Anne Arundel | 38 59 42 N | 076 29 41 W |
| Wards Chapel | Church | 183 | Baltimore | 39 23 43 N | 076 51 47 W |
| Wards Meadow | Populated Place | 30 | Calvert | 38 42 12 N | 076 39 14 W |
| Wards Memorial Methodist Church | Church | 41 | Calvert | 38 42 06 N | 076 33 40 W |
| Wards Run | Stream | | Charles | 38 28 20 N | 077 07 43 W |
| Ware Point | Cape | 0 | Dorchester | 38 14 39 N | 076 07 51 W |
| Ware Point | Cape | 1 | Somerset | 37 56 22 N | 075 49 16 W |
| Ware Point Cove | Bay | 0 | Dorchester | 38 14 33 N | 076 07 39 W |
| Ware Point Marsh | Swamp | 1 | Somerset | 37 56 56 N | 075 50 07 W |
| Waredaca Farm Airport | Airport | 163 | Montgomery | 39 13 50 N | 077 05 00 W |
| Warehime Cemetery | Cemetery | 175 | Carroll | 39 33 42 N | 077 03 05 W |
| Warehouse Creek | Bay | 4 | Anne Arundel | 38 56 47 N | 076 33 08 W |
| Warehouse Creek | Stream | | Queen Anne's | 38 56 18 N | 076 18 51 W |
| Warehouse Point | Cape | 1 | Charles | 38 29 43 N | 077 01 14 W |
| Warehouse Point | Cape | 3 | St. Mary's | 38 12 52 N | 076 28 30 W |
| Warehouse Run | Stream | | St. Mary's | 38 13 17 N | 076 29 12 W |
| Warfield | Populated Place | 43 | Anne Arundel | 39 07 11 N | 076 42 23 W |
| Warfield (subdivision) | Populated Place | 110 | Frederick | 39 27 00 N | 077 26 29 W |
| Warfield Estates | Populated Place | 180 | Howard | 39 16 44 N | 077 01 23 W |
| Warfield Private Airstrip | Airport | 175 | Howard | 39 17 14 N | 077 04 31 W |
| Warfields Pond | Reservoir | 168 | Howard | 39 16 28 N | 077 01 09 W |
| Warfields Pond Park | Park | 167 | Howard | 39 16 34 N | 077 01 15 W |
| Warfields Range | Populated Place | 113 | Howard | 39 09 17 N | 076 52 28 W |
| Warfieldsburg | Populated Place | 234 | Carroll | 39 31 35 N | 077 01 58 W |
| Waring (historical) | Populated Place | 115 | Montgomery | 39 09 36 N | 077 15 05 W |
| Warington Hills | Populated Place | 10 | Charles | 38 35 45 N | 077 09 36 W |
| WARK-AM (Hagerstown) | Tower | 158 | Washington | 39 37 35 N | 077 42 39 W |
| Warner Cemetery | Cemetery | 782 | Allegany | 39 36 18 N | 078 54 06 W |
| Warner Gap | Gap | 431 | Washington | 39 39 05 N | 077 31 25 W |
| Warner Gap Hollow | Valley | | Washington | 39 39 52 N | 077 33 03 W |
| Warner Memorial Presbyterian Church | Church | 86 | Montgomery | 39 01 21 N | 077 04 33 W |
| Warners Gap Hollow Dam | Dam | 327 | Washington | 39 39 42 N | 077 32 41 W |
| Warners Point | Cape | -8 | Anne Arundel | 38 49 59 N | 076 32 43 W |
| Warnick Point | Cape | 721 | Garrett | 39 34 42 N | 079 05 08 W |
| Warnick Run | Stream | | Garrett | 39 35 16 N | 079 05 01 W |
| Warren | Populated Place | 107 | Baltimore | 39 28 34 N | 076 37 00 W |
| Warren Church | Church | 123 | Montgomery | 39 09 50 N | 077 28 27 W |
| Warren Ditch | Stream | | Wicomico | 38 21 37 N | 075 24 29 W |
| Warren Elementary School | School | 157 | Baltimore | 39 28 26 N | 076 36 28 W |
| Warrington (historical) | Populated Place | 19 | Calvert | 38 32 06 N | 076 32 22 W |
| Warrior Mountain | Summit | 650 | Allegany | 39 37 11 N | 078 37 11 W |
| Warrior Mountain State Wildlife Management Area | Park | 478 | Allegany | 39 36 36 N | 078 38 14 W |
| Warrior Run | Stream | | Allegany | 39 36 01 N | 078 48 42 W |
| Warrlinda | Populated Place | 60 | Charles | 38 34 05 N | 076 58 36 W |
| Warthen Knolls | Populated Place | 43 | Anne Arundel | 38 52 21 N | 076 36 16 W |
| Warwick | Populated Place | 21 | Cecil | 39 25 00 N | 075 46 42 W |
| Warwick (subdivision) | Populated Place | 104 | Harford | 39 33 00 N | 076 20 54 W |
| Warwick (subdivision) | Populated Place | 74 | Harford | 39 31 24 N | 076 11 29 W |
| Warwick Post Office | Post Office | 21 | Cecil | 39 25 02 N | 075 46 41 W |
| Warwick River | Stream | | Dorchester | 38 36 40 N | 075 58 28 W |
| Warwick School | School | 8 | Dorchester | 38 36 33 N | 075 56 39 W |
| WARX-FM (Hagerstown) | Tower | 401 | Frederick | 39 29 43 N | 077 36 41 W |
| WASA-AM (Havre De Grace) | Tower | 94 | Harford | 39 33 55 N | 076 07 08 W |
| Wash Point | Cape | 1 | Queen Anne's | 39 04 48 N | 076 06 41 W |
| Wash Water Lake | Reservoir | 81 | Baltimore (city) | 39 19 12 N | 076 39 56 W |
| Washington Adventist Hospital | Hospital | 71 | Montgomery | 38 59 10 N | 077 00 06 W |
| Washington Bible College | School | 45 | Prince George's | 38 58 39 N | 076 51 47 W |
| Washington Cemetery | Cemetery | 14 | Dorchester | 38 38 43 N | 075 53 06 W |
| Washington Center | Locale | 143 | Montgomery | 39 06 53 N | 077 12 04 W |
| Washington Christian Elementary School | School | 120 | Montgomery | 39 02 42 N | 077 02 22 W |
| Washington Church | Church | 13 | Dorchester | 38 38 50 N | 075 53 18 W |
| Washington Church | Church | 4 | Wicomico | 38 20 23 N | 075 38 09 W |
| Washington College | School | 18 | Kent | 39 13 05 N | 076 03 51 W |
| Washington Company Fire and Emergency Services | Building | | Washington | 40 04 27 N | 078 12 17 W |
| Washington Country Club (historical) | Locale | 149 | Montgomery | 39 06 48 N | 077 11 31 W |
| Washington County | Civil | 174 | Washington | 39 37 00 N | 077 45 59 W |
| Washington County Business Center | Locale | 176 | Washington | 39 38 45 N | 077 45 18 W |
| Washington County Child Development Center | School | 171 | Washington | 39 38 54 N | 077 43 09 W |
| Washington County Courthouse | Building | 164 | Washington | 39 38 34 N | 077 43 21 W |
| Washington County Detention Center | Building | 177 | Washington | 39 38 22 N | 077 45 31 W |
| Washington County Emergency Air Unit Company 25 | Building | | Washington | 40 02 50 N | 078 16 38 W |
| Washington County Fairgrounds | Park | 165 | Washington | 39 38 48 N | 077 42 21 W |
| Washington County Free Library | Building | 164 | Washington | 39 38 25 N | 077 43 16 W |
| Washington County Hospital | Hospital | 165 | Washington | 39 38 14 N | 077 42 58 W |
| Washington County Hospital Heliport | Airport | 157 | Washington | 39 38 14 N | 077 42 53 W |
| Washington County Jail (historical) | Building | 170 | Washington | 39 38 46 N | 077 43 15 W |
| Washington County Museum of Fine Arts | Building | 167 | Washington | 39 38 13 N | 077 43 53 W |
| Washington County Regional Airport | Airport | 208 | Washington | 39 42 28 N | 077 43 46 W |
| Washington County Sheriffs Office | Building | | Washington | 40 04 28 N | 078 16 23 W |
| Washington Court | Populated Place | 274 | Carroll | 39 32 40 N | 076 59 41 W |
| Washington Creek | Bay | -4 | St. Mary's | 38 28 10 N | 076 40 15 W |
| Washington Crest Heights | Populated Place | 44 | Anne Arundel | 39 08 54 N | 076 40 44 W |
| Washington Executive Airport | Airport | 74 | Prince George's | 38 44 58 N | 076 55 57 W |
| Washington Four | Populated Place | 142 | Washington | 39 30 40 N | 077 48 27 W |
| Washington Grove | Populated Place | 155 | Montgomery | 39 08 23 N | 077 10 31 W |
| Washington Grove Elementary School | School | 158 | Montgomery | 39 07 57 N | 077 10 40 W |
| Washington Grove Methodist Church | Church | 155 | Montgomery | 39 08 27 N | 077 10 35 W |