Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Montrose (historical) | Building | 52 | District of Columbia | 38 54 46 N | 077 03 40 W |
| Montrose Park | Park | 49 | District of Columbia | 38 54 51 N | 077 03 35 W |
| Montrose Post Office (historical) | Post Office | 3 | District of Columbia | 38 52 10 N | 076 59 12 W |
| Monument Grounds | Area | 9 | District of Columbia | 38 53 20 N | 077 02 09 W |
| Moore Academy | School | 52 | District of Columbia | 38 55 57 N | 076 59 32 W |
| Moore House | Building | 24 | District of Columbia | 38 54 29 N | 077 02 24 W |
| Moorland Spingarn Research Center | Building | 53 | District of Columbia | 38 55 20 N | 077 01 10 W |
| Moran Building | Building | 13 | District of Columbia | 38 53 50 N | 077 01 09 W |
| Morgan School | School | 37 | District of Columbia | 38 55 06 N | 077 02 25 W |
| Mormon Temple | Church | 59 | District of Columbia | 38 55 33 N | 077 02 13 W |
| Morris Addition (historical) | Populated Place | 14 | District of Columbia | 38 54 20 N | 076 58 09 W |
| Morris and Nicholson Wharf | Locale | 2 | District of Columbia | 38 52 25 N | 077 01 15 W |
| Morris House | Building | 33 | District of Columbia | 38 54 20 N | 077 04 10 W |
| Morrison-Clark Inn | Building | 25 | District of Columbia | 38 54 15 N | 077 01 36 W |
| Morse School | School | 23 | District of Columbia | 38 54 44 N | 077 01 05 W |
| Morsell House | Building | 20 | District of Columbia | 38 54 24 N | 077 03 26 W |
| Moten Elementary School | School | 78 | District of Columbia | 38 51 23 N | 076 58 58 W |
| Motion Picture Association Building (historical) | Building | 20 | District of Columbia | 38 54 02 N | 077 02 12 W |
| Mott Theatre (historical) | Building | 20 | District of Columbia | 38 54 33 N | 077 03 17 W |
| Mount Alto | Summit | 107 | District of Columbia | 38 55 25 N | 077 04 29 W |
| Mount Alto Hospital (historical) | Hospital | 107 | District of Columbia | 38 55 26 N | 077 04 29 W |
| Mount Bethel Baptist Church | Church | 34 | District of Columbia | 38 55 08 N | 077 00 55 W |
| Mount Carmel Baptist Church | Church | 16 | District of Columbia | 38 54 05 N | 077 00 54 W |
| Mount Hamilton | Summit | 72 | District of Columbia | 38 54 31 N | 076 58 31 W |
| Mount Olivet Cemetery | Cemetery | 37 | District of Columbia | 38 54 43 N | 076 58 44 W |
| Mount Olivet Lutheran Church | Church | 28 | District of Columbia | 38 54 28 N | 077 01 49 W |
| Mount Pleasant | Populated Place | 55 | District of Columbia | 38 55 50 N | 077 02 27 W |
| Mount Pleasant (historical) | Building | 59 | District of Columbia | 38 55 20 N | 077 01 48 W |
| Mount Pleasant (historical) | Civil | 37 | District of Columbia | 38 55 10 N | 077 01 54 W |
| Mount Pleasant Army Hospital (historical) | Hospital | 57 | District of Columbia | 38 55 44 N | 077 01 44 W |
| Mount Pleasant Branch - DC Public Library | Building | 61 | District of Columbia | 38 55 50 N | 077 02 13 W |
| Mount Pleasant Congregational Church (historical) | Church | 60 | District of Columbia | 38 55 38 N | 077 01 59 W |
| Mount Saint Alban | Summit | 116 | District of Columbia | 38 55 50 N | 077 04 14 W |
| Mount Saint Sepulchre | Summit | 56 | District of Columbia | 38 56 15 N | 076 59 06 W |
| Mount Vernon Junior College and Seminary | School | 81 | District of Columbia | 38 55 05 N | 077 05 23 W |
| Mount Vernon Place United Methodist Church | Church | 21 | District of Columbia | 38 54 10 N | 077 01 27 W |
| Mount Vernon Row (historical) | Building | 21 | District of Columbia | 38 54 09 N | 077 01 31 W |
| Mount Vernon Square | Park | 20 | District of Columbia | 38 54 09 N | 077 01 22 W |
| Mount Vernon Square | Populated Place | 25 | District of Columbia | 38 54 17 N | 077 01 22 W |
| Mount Vernon Square-UDC Metro Station | Locale | 24 | District of Columbia | 38 54 16 N | 077 01 22 W |
| Mount Vernon Theater | Building | 21 | District of Columbia | 38 54 10 N | 077 01 27 W |
| Mount Zion Cemetery (historical) | Cemetery | 26 | District of Columbia | 38 54 37 N | 077 03 15 W |
| Mount Zion Church Parsonage | Building | 26 | District of Columbia | 38 54 28 N | 077 03 31 W |
| Mount Zion Methodist Church | Church | 121 | District of Columbia | 38 56 56 N | 077 04 52 W |
| Mount Zion United Methodist Church | Church | 26 | District of Columbia | 38 54 29 N | 077 03 30 W |
| Mount Zion United Methodist Community House | Building | 27 | District of Columbia | 38 54 30 N | 077 03 31 W |
| Mountjoy Bayly House | Building | 27 | District of Columbia | 38 53 30 N | 077 00 16 W |
| MPD 2nd Heliport | Airport | 112 | District of Columbia | 38 56 04 N | 077 04 26 W |
| MPD 3rd District Heliport | Airport | 30 | District of Columbia | 38 55 01 N | 077 02 09 W |
| MPD 5th Heliport | Airport | 20 | District of Columbia | 38 54 54 N | 076 58 22 W |
| Mule Hospital | Hospital | 6 | District of Columbia | 38 54 12 N | 077 03 34 W |
| Mulledy Building | Building | | District of Columbia | 38 54 25 N | 077 04 25 W |
| Mullen Library | Building | 62 | District of Columbia | 38 56 01 N | 076 59 55 W |
| Mullen Memorial Library | Building | 60 | District of Columbia | 38 56 01 N | 076 59 52 W |
| Mullett Rowhouses | Building | 19 | District of Columbia | 38 54 16 N | 077 03 14 W |
| Munitions Building (historical) | Building | 5 | District of Columbia | 38 53 28 N | 077 02 44 W |
| Munson Hall | Building | | District of Columbia | 38 54 01 N | 077 02 58 W |
| Murch Elementary School | School | 100 | District of Columbia | 38 57 09 N | 077 04 10 W |
| Murder Bay (historical) | Area | 20 | District of Columbia | 38 53 50 N | 077 02 49 W |
| Murdocks Mill (historical) | Locale | 71 | District of Columbia | 38 56 40 N | 077 05 47 W |
| Museum of Contemporary Art DC | Building | 15 | District of Columbia | 38 54 16 N | 077 03 40 W |
| Museum of Modern Latin American Art | Building | 6 | District of Columbia | 38 53 34 N | 077 02 29 W |
| Myer House (historical) | Building | 20 | District of Columbia | 38 54 04 N | 077 02 18 W |
| Myrene Apartment Building | Building | 12 | District of Columbia | 38 53 55 N | 077 01 09 W |
| Nacocktanke (historical) | Populated Place | 11 | District of Columbia | 38 53 30 N | 076 57 29 W |
| Nacotchtanke (historical) | Populated Place | 9 | District of Columbia | 38 53 30 N | 076 57 34 W |
| Nalle Elementary School | School | 53 | District of Columbia | 38 53 09 N | 076 55 50 W |
| Nassif Building | Building | 10 | District of Columbia | 38 53 01 N | 077 01 19 W |
| Nathanael Greene Statue | Park | 26 | District of Columbia | 38 53 36 N | 077 00 01 W |
| National Academy of Sciences and Engineering | Building | 9 | District of Columbia | 38 53 34 N | 077 02 52 W |
| National Aeronautical Space Administration Building | Building | 6 | District of Columbia | 38 53 14 N | 077 01 14 W |
| National Air and Space Museum | Building | 4 | District of Columbia | 38 53 17 N | 077 01 11 W |
| National Aquarium of Washington DC | Building | 4 | District of Columbia | 38 53 39 N | 077 01 58 W |
| National Arboretum | Park | 21 | District of Columbia | 38 54 37 N | 076 57 58 W |
| National Archives Building | Building | 4 | District of Columbia | 38 53 34 N | 077 01 23 W |
| National Association of Broadcasters Building | Building | 22 | District of Columbia | 38 54 26 N | 077 02 31 W |
| National Bank of Washington | Building | 5 | District of Columbia | 38 53 36 N | 077 01 19 W |
| National Baptist Memorial Church | Church | 62 | District of Columbia | 38 55 38 N | 077 02 10 W |
| National Benefit Association Building (historical) | Building | 13 | District of Columbia | 38 53 50 N | 077 01 14 W |
| National Building Museum | Building | 13 | District of Columbia | 38 53 51 N | 077 01 03 W |
| National Bureau of Standards Building | Building | 99 | District of Columbia | 38 56 36 N | 077 04 04 W |
| National Capital Parks Central Headquarters | Building | 3 | District of Columbia | 38 52 51 N | 077 01 56 W |
| National Capital Parks East Headquarters | Building | 3 | District of Columbia | 38 51 57 N | 076 59 39 W |
| National Capital Parks Headquarters | Building | 3 | District of Columbia | 38 52 34 N | 077 02 01 W |
| National Cathedral School for Girls | School | 117 | District of Columbia | 38 55 51 N | 077 04 19 W |
| National Cathedral School for Girls | School | 113 | District of Columbia | 38 55 55 N | 077 04 17 W |
| National Cathedral School for Girls | School | 117 | District of Columbia | 38 55 52 N | 077 04 20 W |
| National Christmas Tree | Park | 6 | District of Columbia | 38 53 40 N | 077 02 11 W |
| National City Christian Church | Church | 28 | District of Columbia | 38 54 23 N | 077 01 57 W |
| National Council of Negro Womens Headquaters | Building | 28 | District of Columbia | 38 54 38 N | 077 01 45 W |
| National Defense University | School | 4 | District of Columbia | 38 52 20 N | 077 00 59 W |
| National Education Association Building | Building | 21 | District of Columbia | 38 54 21 N | 077 02 09 W |
| National Endowment for the Arts Building | Building | 4 | District of Columbia | 38 53 40 N | 077 01 40 W |
| National Fairgrounds | Locale | 47 | District of Columbia | 38 55 15 N | 076 59 14 W |
| National Gallery of Art | Building | 3 | District of Columbia | 38 53 28 N | 077 01 12 W |
| National Gallery of Art - East Building | Building | 4 | District of Columbia | 38 53 28 N | 077 00 60 W |
| National Geographic Society Building | Building | 19 | District of Columbia | 38 54 18 N | 077 02 17 W |
| National Green House (historical) | Building | 5 | District of Columbia | 38 53 22 N | 077 00 49 W |
| National Guard District of Columbia Rifle Range (historical) | Military (Historical) | 2 | District of Columbia | 38 54 16 N | 077 04 23 W |
| National Guard Heritage Gallery | Building | 11 | District of Columbia | 38 53 52 N | 077 00 34 W |
| National Guard Memorial Building | Building | 11 | District of Columbia | 38 53 50 N | 077 00 34 W |
| National Headquarters Building | Building | 23 | District of Columbia | 38 54 39 N | 077 02 50 W |
| National Headquaters of National Society of Colonial Dams of America | Building | 29 | District of Columbia | 38 54 38 N | 077 03 17 W |
| National Home for Destitute Colored Women and Children (historical) | Building | 45 | District of Columbia | 38 55 25 N | 077 01 24 W |
| National Hotel (historical) | Building | 5 | District of Columbia | 38 53 35 N | 077 01 11 W |
| National Law Enforcement Officers Memorial | Park | 12 | District of Columbia | 38 53 46 N | 077 00 60 W |
| National Lutheran Home for the Aged | Building | 50 | District of Columbia | 38 55 24 N | 076 58 41 W |
| National Metropolitan Bank Building | Building | 13 | District of Columbia | 38 53 52 N | 077 01 59 W |
| National Museum of African Art | Building | 27 | District of Columbia | 38 53 28 N | 077 00 05 W |
| National Museum of American Art | Building | 16 | District of Columbia | 38 53 52 N | 077 01 22 W |