Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Riddell Building | Building | 18 | District of Columbia | 38 54 10 N | 077 02 24 W |
| Ridge Playground | Park | 61 | District of Columbia | 38 52 37 N | 076 56 29 W |
| Ridge Recreation Center | Park | 64 | District of Columbia | 38 52 33 N | 076 56 26 W |
| Riggs LaSalle Recreation Center | Park | 50 | District of Columbia | 38 57 38 N | 076 59 57 W |
| Riggs Library | Building | | District of Columbia | 38 54 25 N | 077 04 22 W |
| Riggs Memorial Library | Building | 45 | District of Columbia | 38 54 26 N | 077 04 22 W |
| Riggs Park | Populated Place | 47 | District of Columbia | 38 57 15 N | 076 59 39 W |
| Riggs Plaza | Locale | 50 | District of Columbia | 38 57 40 N | 076 59 52 W |
| Riggs Road Playground | Park | 48 | District of Columbia | 38 57 33 N | 076 59 57 W |
| Riggs-LaSalle Playground | Park | 49 | District of Columbia | 38 57 35 N | 077 00 02 W |
| Riggs-Riley House | Building | 26 | District of Columbia | 38 54 23 N | 077 03 36 W |
| Riggs-Tompkins Building | Building | 59 | District of Columbia | 38 55 51 N | 077 01 58 W |
| Riley Spring Bridge | Bridge | 49 | District of Columbia | 38 58 40 N | 077 02 36 W |
| Ringgold House (historical) | Building | 21 | District of Columbia | 38 54 13 N | 077 03 06 W |
| Ringgold-Carroll House | Building | 17 | District of Columbia | 38 53 50 N | 077 02 32 W |
| Ripps Island (historical) | Island | 7 | District of Columbia | 38 53 26 N | 077 02 17 W |
| River Horse Statue | Park | 20 | District of Columbia | 38 53 58 N | 077 02 41 W |
| River Terrace | Populated Place | 10 | District of Columbia | 38 53 31 N | 076 57 27 W |
| River Terrace Elementary School | School | 8 | District of Columbia | 38 53 43 N | 076 57 28 W |
| River Terrace Recreation Center | Park | 8 | District of Columbia | 38 53 44 N | 076 57 27 W |
| Riverside Hospital | Hospital | 33 | District of Columbia | 38 54 29 N | 077 05 04 W |
| Riverside Stadium (historical) | Park | 5 | District of Columbia | 38 53 41 N | 077 03 20 W |
| Roaches Run | Stream | | District of Columbia | 38 51 47 N | 077 02 11 W |
| Robert A Taft Memorial and Carillon | Park | 9 | District of Columbia | 38 53 34 N | 077 00 40 W |
| Robert Emmet Statue | Park | 31 | District of Columbia | 38 54 50 N | 077 03 09 W |
| Robert F Kennedy Memorial Stadium | Park | 7 | District of Columbia | 38 53 22 N | 076 58 18 W |
| Robert Francis Kennedy Memorial | Park | 4 | District of Columbia | 38 53 36 N | 077 01 29 W |
| Robert H and Clarice Smith Hall of Art | Building | | District of Columbia | 38 54 00 N | 077 02 54 W |
| Robert P Dodge House | Building | 31 | District of Columbia | 38 54 35 N | 077 03 26 W |
| Robert Peters Houses | Building | 11 | District of Columbia | 38 54 09 N | 077 03 17 W |
| Robert Simpson Woodward House | Building | 25 | District of Columbia | 38 54 36 N | 077 02 09 W |
| Robeys Slave Pen (historical) | Locale | 9 | District of Columbia | 38 53 10 N | 077 01 23 W |
| Robeyville (historical) | Populated Place | 91 | District of Columbia | 38 56 50 N | 077 05 24 W |
| Rochambeau Memorial Bridge | Bridge | 1 | District of Columbia | 38 52 32 N | 077 02 23 W |
| Rock Creek | Stream | | District of Columbia | 38 53 58 N | 077 03 26 W |
| Rock Creek Baptist Church | Church | 62 | District of Columbia | 38 56 31 N | 077 01 23 W |
| Rock Creek Cemetery | Cemetery | 90 | District of Columbia | 38 56 51 N | 077 00 40 W |
| Rock Creek Church Yard | Building | 98 | District of Columbia | 38 56 40 N | 077 00 43 W |
| Rock Creek Gardens | Populated Place | 76 | District of Columbia | 38 59 19 N | 077 02 44 W |
| Rock Creek Park | Park | 69 | District of Columbia | 38 58 19 N | 077 02 47 W |
| Rock Creek Park Bike Trail | Trail | 9 | District of Columbia | 38 55 39 N | 077 02 59 W |
| Rock Creek Park Box Office | Building | 76 | District of Columbia | 38 57 04 N | 077 02 26 W |
| Rock Creek Park Clubhouse | Locale | 79 | District of Columbia | 38 57 54 N | 077 02 24 W |
| Rock Creek Park Equitation Field | Area | 65 | District of Columbia | 38 56 55 N | 077 02 57 W |
| Rock Creek Park Exercise Course | Park | 26 | District of Columbia | 38 55 19 N | 077 03 06 W |
| Rock Creek Park Headquarters | Building | 93 | District of Columbia | 38 57 23 N | 077 03 00 W |
| Rock Creek Park Horse Center | Building | 102 | District of Columbia | 38 57 28 N | 077 03 04 W |
| Rock Creek Park Maintenance Yard | Building | 92 | District of Columbia | 38 57 22 N | 077 02 59 W |
| Rock Creek Park Nature Center and Planetarium | Building | 104 | District of Columbia | 38 57 35 N | 077 03 06 W |
| Rock Creek Park Orienteering Course | Trail | 69 | District of Columbia | 38 58 14 N | 077 03 12 W |
| Rock Creek Park Police Stables | Building | 94 | District of Columbia | 38 58 04 N | 077 03 03 W |
| Rock Creek Park Police Substation | Building | 47 | District of Columbia | 38 57 35 N | 077 02 24 W |
| Rock Creek Park Public Golf Course | Locale | 72 | District of Columbia | 38 57 57 N | 077 02 29 W |
| Rock Creek Park Trail Center | Building | 45 | District of Columbia | 38 57 36 N | 077 02 26 W |
| Rock Creek Post Office (historical) | Post Office | 76 | District of Columbia | 38 57 13 N | 077 00 30 W |
| Rock Creek Stable | Building | 101 | District of Columbia | 38 57 30 N | 077 03 02 W |
| Rock Creek Valley | Valley | | District of Columbia | 38 54 17 N | 077 03 21 W |
| Rock Creek Valley Stable | Building | 15 | District of Columbia | 38 55 13 N | 077 02 58 W |
| Rock Hill (historical) | Locale | 34 | District of Columbia | 38 54 51 N | 077 03 08 W |
| Rock of Dumbarton | Area | 20 | District of Columbia | 38 54 20 N | 077 03 39 W |
| Rock of Dumbarton Tract (historical) | Civil | | District of Columbia | 38 54 18 N | 077 03 40 W |
| Rockwood Building | Building | 107 | District of Columbia | 38 56 05 N | 077 05 28 W |
| Rodgers House (historical) | Building | 18 | District of Columbia | 38 53 58 N | 077 02 06 W |
| Rolling Meadow Bridge | Bridge | 45 | District of Columbia | 38 58 12 N | 077 02 42 W |
| Romanian Legation Building | Building | 24 | District of Columbia | 38 54 41 N | 077 03 00 W |
| Ronald H Browne Middle School | School | 17 | District of Columbia | 38 54 08 N | 076 58 14 W |
| Ronald Reagan Building and International Trade Center | Building | 4 | District of Columbia | 38 53 38 N | 077 01 49 W |
| Roosevelt Adult Education Center | School | 59 | District of Columbia | 38 56 34 N | 077 01 42 W |
| Roosevelt Apartment Building | Building | 20 | District of Columbia | 38 53 50 N | 076 59 25 W |
| Roosevelt Mansion | Building | 23 | District of Columbia | 38 54 27 N | 077 02 37 W |
| Roosevelt School To Aid Youth | School | 59 | District of Columbia | 38 56 34 N | 077 01 42 W |
| Roosevelt Senior High School | School | 59 | District of Columbia | 38 56 35 N | 077 01 44 W |
| Roper Hall | Building | 117 | District of Columbia | 38 56 06 N | 077 05 20 W |
| Roper Junior High School | School | 9 | District of Columbia | 38 54 23 N | 076 55 56 W |
| Roper Recreation Center | Park | 9 | District of Columbia | 38 54 24 N | 076 55 59 W |
| Rose Park Playground | Park | 12 | District of Columbia | 38 54 30 N | 077 03 15 W |
| Rose Park Recreation Center | Park | 19 | District of Columbia | 38 54 32 N | 077 03 15 W |
| Rosedale | Building | 106 | District of Columbia | 38 56 04 N | 077 04 08 W |
| Rosedale | Populated Place | 9 | District of Columbia | 38 53 50 N | 076 58 44 W |
| Rosedale Methodist Church | Church | 21 | District of Columbia | 38 53 43 N | 076 59 10 W |
| Rosedale Playground | Park | 9 | District of Columbia | 38 53 49 N | 076 58 44 W |
| Rosedale Recreation Center | Park | 10 | District of Columbia | 38 53 51 N | 076 58 46 W |
| Rosemont Cemetery (historical) | Cemetery | 81 | District of Columbia | 38 51 10 N | 076 58 43 W |
| Rosemont Farm (historical) | Locale | 41 | District of Columbia | 38 55 26 N | 076 58 29 W |
| Rosemount Park (historical) | Park | 31 | District of Columbia | 38 56 03 N | 077 02 47 W |
| Rosewood Cemetery | Cemetery | 82 | District of Columbia | 38 51 09 N | 076 58 41 W |
| Ross and Getty Building | Building | 28 | District of Columbia | 38 54 29 N | 077 03 35 W |
| Ross Elementary School | School | 25 | District of Columbia | 38 54 43 N | 077 02 23 W |
| Ross Hall | Building | | District of Columbia | 38 54 00 N | 077 03 03 W |
| Round Hill | Summit | 61 | District of Columbia | 38 55 34 N | 076 59 19 W |
| Rousseau House | Building | 62 | District of Columbia | 38 54 48 N | 077 03 55 W |
| Royal Danish Embassy | Building | 52 | District of Columbia | 38 55 06 N | 077 03 42 W |
| Royal Nepalese Embassy | Building | 52 | District of Columbia | 38 54 57 N | 077 02 54 W |
| Royal Norwegian Embassy | Building | 76 | District of Columbia | 38 55 27 N | 077 04 00 W |
| Ruben Dario Sculpture | Park | 6 | District of Columbia | 38 53 33 N | 077 02 28 W |
| Rudolph Elementary School | School | 63 | District of Columbia | 38 57 13 N | 077 00 49 W |
| Rudolph Playground | Park | 61 | District of Columbia | 38 57 13 N | 077 00 54 W |
| Rudolph Recreation Center | Park | 63 | District of Columbia | 38 57 13 N | 077 00 49 W |
| Rum Row | Locale | 6 | District of Columbia | 38 53 45 N | 077 01 49 W |
| Ruppert Home | Locale | 36 | District of Columbia | 38 51 58 N | 076 58 28 W |
| Rush Barracks (historical) | Locale | 9 | District of Columbia | 38 53 45 N | 077 02 12 W |
| Rush House | Park | 1 | District of Columbia | 38 52 59 N | 077 02 28 W |
| Russell Senate Office Building | Building | 22 | District of Columbia | 38 53 34 N | 077 00 24 W |
| Russian Embassy | Building | 95 | District of Columbia | 38 55 29 N | 077 04 31 W |
| Russian Orthodox Church of Saint John the Baptist | Church | 49 | District of Columbia | 38 56 23 N | 077 02 16 W |
| Russian Orthodox Church of Saint Nicholas | Church | 86 | District of Columbia | 38 55 29 N | 077 04 08 W |
| Ryan Gymnasium | Building | 41 | District of Columbia | 38 54 28 N | 077 04 24 W |
| Ryan Hall | Building | 53 | District of Columbia | 38 56 14 N | 076 59 50 W |
| Ryder Hall | Building | | District of Columbia | 38 54 21 N | 077 04 12 W |
| Ryders Castle | Building | 8 | District of Columbia | 38 53 43 N | 077 00 40 W |