Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Thayerville | Populated Place | 753 | Garrett | 39 30 06 N | 079 19 36 W |
| Thayerville Lookout Tower | Tower | 923 | Garrett | 39 31 09 N | 079 18 05 W |
| The Alameda | Populated Place | 42 | Calvert | 38 36 01 N | 076 37 54 W |
| The Anchorage | Bay | -3 | Talbot | 38 47 56 N | 076 07 14 W |
| The Aspen Institute Heliport | Airport | 14 | Queen Anne's | 38 54 33 N | 076 07 11 W |
| The Bachelor Point Harbor | Populated Place | 0 | Talbot | 38 40 22 N | 076 10 19 W |
| The Beechs | Populated Place | 124 | Baltimore | 39 24 54 N | 076 33 47 W |
| The Big Broads | Channel | 0 | Dorchester | 38 22 37 N | 076 16 24 W |
| The Birches | Populated Place | 121 | Howard | 39 13 45 N | 076 51 51 W |
| The Bluffs | Populated Place | 74 | Cecil | 39 39 17 N | 076 08 52 W |
| The Brunswick Shopping Center | Locale | 141 | Frederick | 39 19 29 N | 077 37 25 W |
| The Bunker | Summit | 157 | Baltimore | 39 27 19 N | 076 53 15 W |
| The Canal | Canal | 0 | Dorchester | 38 19 33 N | 076 10 21 W |
| The Canal | Canal | 0 | Dorchester | 38 24 33 N | 075 59 40 W |
| The Canal | Canal | 0 | Dorchester | 38 30 32 N | 075 47 04 W |
| The Canal | Canal | 4 | Somerset | 37 59 10 N | 076 01 20 W |
| The Canal | Stream | | Wicomico | 38 21 44 N | 075 51 00 W |
| The Caroline Center | Building | 18 | Caroline | 38 56 23 N | 075 53 04 W |
| The Cascade | Falls | 303 | Frederick | 39 31 02 N | 077 31 29 W |
| The Caves | Basin | 141 | Baltimore | 39 26 11 N | 076 45 03 W |
| The Cedars | Locale | 3 | Kent | 39 03 40 N | 076 13 36 W |
| The Cedars | Populated Place | 50 | Harford | 39 28 58 N | 076 17 48 W |
| The Center at Salisbury Shopping Center | Locale | 10 | Wicomico | 38 23 39 N | 075 34 28 W |
| The Chase | Populated Place | 128 | Howard | 39 14 35 N | 076 55 04 W |
| The Chase at Foxridge | Populated Place | 177 | Baltimore | 39 23 36 N | 076 47 24 W |
| The Church of Jesus Christ of Later Day Saints | Church | 125 | Howard | 39 15 21 N | 076 49 21 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 221 | Allegany | 39 39 42 N | 078 46 33 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 61 | Baltimore (city) | 39 19 38 N | 076 34 52 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 53 | Calvert | 38 40 10 N | 076 35 59 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 18 | Caroline | 38 56 42 N | 075 53 09 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 7 | Dorchester | 38 33 07 N | 076 01 40 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 105 | Frederick | 39 24 40 N | 077 26 01 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 127 | Harford | 39 34 25 N | 076 10 45 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 119 | Howard | 39 15 23 N | 076 49 30 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 105 | Montgomery | 38 57 49 N | 077 04 58 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 163 | Washington | 39 37 26 N | 077 41 45 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 13 | Wicomico | 38 22 28 N | 075 33 12 W |
| The Cloisters at Charles | Populated Place | 140 | Baltimore | 39 23 01 N | 076 37 01 W |
| The College Park Volunteer Fire Department Company 12. | Building | | Prince George's | 39 39 05 N | 077 33 37 W |
| The Colony | Populated Place | 126 | Baltimore | 39 24 30 N | 076 36 59 W |
| The Colony | Populated Place | 141 | Montgomery | 39 10 40 N | 077 15 41 W |
| The Corners | Populated Place | 192 | Howard | 39 15 53 N | 076 58 49 W |
| The Cornfield | Locale | 155 | Washington | 39 28 55 N | 077 44 45 W |
| The Courts at Piney Orchard | Populated Place | 67 | Anne Arundel | 39 04 22 N | 076 42 34 W |
| The Courts of Four Seasons | Populated Place | 56 | Anne Arundel | 39 03 21 N | 076 41 52 W |
| The Courtyards | Populated Place | 28 | Anne Arundel | 38 59 05 N | 076 32 51 W |
| The Customs House | Building | 1 | Dorchester | 38 28 53 N | 075 49 29 W |
| The Customs House | Building | 5 | Kent | 39 12 25 N | 076 03 50 W |
| The Dales | Populated Place | 34 | Anne Arundel | 39 06 18 N | 076 33 49 W |
| The Ditch | Canal | 0 | Worcester | 38 02 08 N | 075 21 51 W |
| The Ditch | Canal | 0 | Worcester | 38 27 02 N | 075 03 56 W |
| The Ditch | Channel | 0 | Worcester | 38 21 45 N | 075 07 11 W |
| The Downs | Populated Place | 31 | Anne Arundel | 39 01 00 N | 076 33 12 W |
| The Dunghill | Summit | 829 | Garrett | 39 38 14 N | 079 13 07 W |
| The Earth and Space Science Laboratory | School | 98 | Frederick | 39 24 34 N | 077 24 59 W |
| The Elbow | Summit | 755 | Garrett | 39 35 36 N | 079 04 23 W |
| The Elms Wildlife Management Area | Park | 3 | St. Mary's | 38 12 10 N | 076 22 44 W |
| The Estates of Wyn Lea | Populated Place | 112 | Cecil | 39 41 57 N | 075 54 29 W |
| The Fairways | Populated Place | 130 | Howard | 39 16 40 N | 076 52 04 W |
| The Fairways at Wakefield (subdivision) | Populated Place | 183 | Carroll | 39 33 57 N | 077 02 27 W |
| The Falls | Populated Place | 122 | Baltimore | 39 22 58 N | 076 40 19 W |
| The Ferry House | Building | 3 | Dorchester | 38 29 02 N | 075 49 27 W |
| The Fields of Four Corners | Populated Place | 174 | Baltimore | 39 30 55 N | 076 33 09 W |
| The Glades | Swamp | 819 | Garrett | 39 34 10 N | 079 16 38 W |
| The Glebe | Locale | 33 | St. Mary's | 38 18 05 N | 076 46 58 W |
| The Greens | Populated Place | 157 | Frederick | 39 22 40 N | 077 18 54 W |
| The Greens of Crofton | Populated Place | 45 | Anne Arundel | 38 59 40 N | 076 40 39 W |
| The Grotto of Lourdes | Church | 242 | Frederick | 39 40 58 N | 077 21 25 W |
| The Grove | Populated Place | 16 | Queen Anne's | 39 11 30 N | 076 00 04 W |
| The Gunbarrel | Bar | -5 | Somerset | 38 08 34 N | 076 02 01 W |
| The Hamlet | Populated Place | 92 | Montgomery | 38 59 12 N | 077 04 25 W |
| The Hammock | Island | -2 | Anne Arundel | 39 07 34 N | 076 26 54 W |
| The Haven | Bay | -2 | Kent | 39 08 42 N | 076 14 54 W |
| The Hemlocks | Populated Place | 183 | Carroll | 39 24 13 N | 076 56 01 W |
| The Heritage | Populated Place | 168 | Howard | 39 15 30 N | 077 00 22 W |
| The Hermitage | Populated Place | 241 | Carroll | 39 31 44 N | 077 02 18 W |
| The Highlands | Populated Place | 17 | Anne Arundel | 39 08 01 N | 076 36 54 W |
| The Highlands | Populated Place | 31 | Calvert | 38 42 10 N | 076 33 13 W |
| The Highlands | Populated Place | 67 | Cecil | 39 41 11 N | 075 47 28 W |
| The Highlands of Hunt Valley | Populated Place | 149 | Baltimore | 39 31 00 N | 076 36 15 W |
| The Hill Farm | Populated Place | 154 | Baltimore | 39 26 17 N | 076 40 44 W |
| The Hills | Populated Place | 28 | Anne Arundel | 38 45 10 N | 076 34 34 W |
| The Horizons Business Park | Locale | | Anne Arundel | 39 07 42 N | 076 35 40 W |
| The Inlet | Channel | 0 | Wicomico | 38 24 18 N | 075 50 11 W |
| The Irish Grove | Area | 1 | Somerset | 37 58 40 N | 075 43 49 W |
| The Johns Hopkins Hospital Heliport | Airport | 31 | Baltimore | 39 17 50 N | 076 35 36 W |
| The Knolls | Populated Place | 36 | Calvert | 38 32 25 N | 076 36 01 W |
| The Lakes | Populated Place | 144 | Baltimore | 39 28 09 N | 076 36 30 W |
| The Little Mountain | Summit | 892 | Garrett | 39 23 24 N | 079 20 02 W |
| The Lookout | Locale | 199 | Washington | 39 27 24 N | 077 42 24 W |
| The Mall in Columbia Shopping Center | Locale | 103 | Howard | 39 12 56 N | 076 51 36 W |
| The Manor Shopping Center | Locale | | Baltimore | 39 30 59 N | 076 33 33 W |
| The Manors | Populated Place | 214 | Baltimore | 39 27 46 N | 076 47 10 W |
| The Market Place Shopping Center | Locale | 43 | Prince George's | 38 58 40 N | 076 44 04 W |
| The Marshes | Swamp | 3 | Dorchester | 38 22 14 N | 076 16 24 W |
| The Maryland Church of God in Christ | Church | 134 | Baltimore (city) | 39 20 52 N | 076 40 37 W |
| The Maryland Church of God in Christ School | School | 133 | Baltimore (city) | 39 20 51 N | 076 40 33 W |
| The Meadows | Populated Place | 33 | Anne Arundel | 39 00 44 N | 076 28 49 W |
| The Meadows | Populated Place | 189 | Baltimore | 39 24 22 N | 076 48 38 W |
| The Meadows | Populated Place | 58 | Baltimore | 39 24 03 N | 076 27 28 W |
| The Meadows | Populated Place | 11 | Calvert | 38 40 00 N | 076 39 26 W |
| The Meadows | Populated Place | 199 | Carroll | 39 35 35 N | 077 06 12 W |
| The Meadows | Populated Place | 17 | Queen Anne's | 39 09 02 N | 075 58 48 W |
| The Meadows (subdivision) | Populated Place | 61 | Charles | 38 32 10 N | 076 58 25 W |
| The Meadows at Elk Creek | Populated Place | 21 | Cecil | 39 37 50 N | 075 48 11 W |
| The Meeting House - Oakland Mills Interfaith Center | Church | 121 | Howard | 39 12 37 N | 076 50 37 W |
| The Mess | Swamp | 1 | Anne Arundel | 38 52 45 N | 076 34 14 W |
| The Moss | Swamp | 0 | Anne Arundel | 38 52 46 N | 076 34 06 W |
| The Muds | Bar | -3 | Somerset | 37 57 30 N | 075 41 40 W |
| The Narrows | Bay | -3 | Calvert | 38 19 23 N | 076 27 30 W |