Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Rusty Acres | Populated Place | 148 | Montgomery | 39 06 40 N | 076 56 51 W |
| Ruth B Swan Memorial Park | Park | 1 | Charles | 38 37 53 N | 077 05 59 W |
| Ruth Enlow Library of Garrett County | Building | 731 | Garrett | 39 24 40 N | 079 24 23 W |
| Ruth P Eason Special Education Center | School | 33 | Anne Arundel | 39 07 05 N | 076 37 50 W |
| Ruthed Estates | Populated Place | 159 | Carroll | 39 41 05 N | 077 11 14 W |
| Rutherford Business Center | Locale | 139 | Baltimore | 39 19 59 N | 076 45 10 W |
| Rutherford Green | Populated Place | 139 | Baltimore | 39 20 16 N | 076 44 53 W |
| Ruthsburg | Populated Place | 20 | Queen Anne's | 39 00 11 N | 075 57 29 W |
| Rutland | Populated Place | 33 | Anne Arundel | 38 58 20 N | 076 38 23 W |
| Rutland Elementary School | School | 30 | Baltimore (city) | 39 18 32 N | 076 35 36 W |
| Rutland Estates | Populated Place | 37 | Anne Arundel | 38 57 34 N | 076 38 22 W |
| Rutland Schoolhouse (historical) | School | 32 | Anne Arundel | 38 58 20 N | 076 38 22 W |
| Rutledge | Populated Place | 183 | Harford | 39 33 25 N | 076 29 46 W |
| Ruxton | Populated Place | 85 | Baltimore | 39 24 00 N | 076 38 41 W |
| Ruxton Country Middle School | School | 116 | Baltimore | 39 22 43 N | 076 37 41 W |
| Ruxton Country School | School | 87 | Baltimore | 39 23 57 N | 076 38 41 W |
| Ruxton Hills | Populated Place | 120 | Baltimore | 39 23 45 N | 076 39 30 W |
| Ruxton Ridge | Populated Place | 103 | Baltimore | 39 24 29 N | 076 38 27 W |
| Ryceville | Populated Place | 55 | Charles | 38 26 08 N | 076 49 50 W |
| Ryken High School | School | 29 | St. Mary's | 38 17 15 N | 076 37 34 W |
| Ryles Hill | Summit | 4 | Wicomico | 38 19 25 N | 075 52 46 W |
| Ryse Point | Cape | 0 | Wicomico | 38 16 25 N | 075 46 28 W |
| S C Taylor Elementary School | School | 37 | Baltimore (city) | 39 17 55 N | 076 37 36 W |
| S Christa McAuliffe Elementary School | School | 139 | Montgomery | 39 10 02 N | 077 15 39 W |
| Sabbath Church | Church | 19 | Anne Arundel | 39 09 02 N | 076 37 24 W |
| Sabers Creek | Stream | | Wicomico | 38 20 22 N | 075 39 18 W |
| Sabillasville | Populated Place | 332 | Frederick | 39 42 00 N | 077 27 23 W |
| Sabillasville Elementary School | School | 319 | Frederick | 39 40 50 N | 077 27 23 W |
| Sabillasville Post Office | Post Office | 351 | Frederick | 39 42 27 N | 077 27 46 W |
| Sable Woods | Populated Place | 109 | Harford | 39 30 35 N | 076 19 33 W |
| Sabrina Park | Populated Place | 31 | Anne Arundel | 39 05 43 N | 076 34 20 W |
| Sachs Industrial Park | Locale | 51 | Anne Arundel | 39 12 38 N | 076 40 49 W |
| Sackertown | Populated Place | 1 | Somerset | 37 58 20 N | 075 50 34 W |
| Sacketts Pond | Lake | 0 | Anne Arundel | 39 04 34 N | 076 34 42 W |
| Sacred Heart Catholic Church | Church | 55 | Charles | 38 31 34 N | 076 58 45 W |
| Sacred Heart Catholic Church | Church | 42 | St. Mary's | 38 18 09 N | 076 47 32 W |
| Sacred Heart Cemetery | Cemetery | 38 | Baltimore | 39 16 37 N | 076 30 43 W |
| Sacred Heart Cemetery | Cemetery | 50 | Charles | 38 31 17 N | 076 58 39 W |
| Sacred Heart Cemetery | Cemetery | 53 | Prince George's | 38 58 59 N | 076 43 10 W |
| Sacred Heart Church | Church | 202 | Baltimore | 39 28 14 N | 076 49 16 W |
| Sacred Heart Church | Church | 52 | Prince George's | 38 58 58 N | 076 43 09 W |
| Sacred Heart Church | Church | 5 | St. Mary's | 38 15 29 N | 076 45 59 W |
| Sacred Heart Hospital | Hospital | 434 | Allegany | 39 39 19 N | 078 47 44 W |
| Sacred Heart Hospital Heliport | Airport | 419 | Allegany | 39 39 00 N | 078 47 59 W |
| Sacred Heart Mission | Church | 95 | Baltimore (city) | 39 17 16 N | 076 41 20 W |
| Sacred Heart Monastery | Church | 172 | Baltimore | 39 23 42 N | 076 43 57 W |
| Sacred Heart Novitiate | School | 18 | St. Mary's | 38 17 05 N | 076 37 25 W |
| Sacred Heart of Jesus Roman Catholic Church | Church | 32 | Baltimore (city) | 39 17 06 N | 076 34 03 W |
| Sacred Heart of Mary Cemetery | Cemetery | 16 | Baltimore | 39 16 42 N | 076 30 18 W |
| Sacred Heart of Mary Roman Catholic Church | Church | 12 | Baltimore (city) | 39 16 44 N | 076 31 50 W |
| Sacred Heart of Mary School | School | 11 | Baltimore (city) | 39 16 44 N | 076 31 52 W |
| Sacred Heart Parochial School | School | 42 | St. Mary's | 38 18 08 N | 076 47 31 W |
| Sacred Heart Roman Catholic Church | Church | 71 | Baltimore (city) | 39 22 02 N | 076 39 16 W |
| Sacred Heart Roman Catholic Church | Church | 8 | Kent | 39 12 42 N | 076 04 14 W |
| Sacred Heart School | School | 71 | Baltimore (city) | 39 22 02 N | 076 39 16 W |
| Sacred Heart Schools | School | 31 | Baltimore (city) | 39 17 06 N | 076 34 07 W |
| Saddle Ridge | Populated Place | 36 | Anne Arundel | 39 00 55 N | 076 41 28 W |
| Saddlebrook Park | Park | 112 | Montgomery | 39 03 52 N | 077 02 41 W |
| Sadlers Cove | Bay | 0 | Queen Anne's | 38 57 45 N | 076 09 57 W |
| Saefern | Populated Place | 36 | Anne Arundel | 39 00 45 N | 076 32 44 W |
| Saefern Lake | Reservoir | 8 | Anne Arundel | 39 00 47 N | 076 32 22 W |
| Saefern Recreation Lake Dam | Dam | 8 | Anne Arundel | 39 00 47 N | 076 32 22 W |
| Safari Campground | Locale | 157 | Washington | 39 34 41 N | 077 47 31 W |
| Sagamore Forest | Populated Place | 216 | Baltimore | 39 28 13 N | 076 47 52 W |
| Sagamore Village | Populated Place | 206 | Baltimore | 39 28 10 N | 076 48 15 W |
| Sage Point | Cape | 0 | St. Mary's | 38 06 22 N | 076 25 18 W |
| Sageberry Swamp | Swamp | 3 | Wicomico | 38 23 19 N | 075 46 01 W |
| Sagefield | Populated Place | 17 | Queen Anne's | 39 11 00 N | 075 53 08 W |
| Sailors Retreat | Populated Place | 4 | Talbot | 38 40 50 N | 076 06 29 W |
| Sailors Union Bethel Church | Church | 14 | Baltimore (city) | 39 16 39 N | 076 36 28 W |
| Saint Abraham Baptist Church | Church | 61 | Baltimore (city) | 39 18 38 N | 076 38 13 W |
| Saint Adrians Roman Catholic Church | Church | 3 | Baltimore | 39 15 48 N | 076 28 60 W |
| Saint Agnes Chapel (historical) | Church | 3 | St. Mary's | 38 14 25 N | 076 45 58 W |
| Saint Agnes Hospital | Hospital | 51 | Baltimore (city) | 39 16 22 N | 076 40 21 W |
| Saint Agnes Roman Catholic Church | Church | 154 | Baltimore | 39 17 24 N | 076 43 12 W |
| Saint Agnes School | School | 155 | Baltimore | 39 17 23 N | 076 43 14 W |
| Saint Albans Church | Church | 12 | Wicomico | 38 22 03 N | 075 34 13 W |
| Saint Albans Episcopal Church | Church | 19 | Anne Arundel | 39 09 47 N | 076 37 41 W |
| Saint Aloysius Church | Church | 27 | St. Mary's | 38 17 40 N | 076 38 06 W |
| Saint Alphonsus Cemetery | Cemetery | 38 | Baltimore (city) | 39 18 14 N | 076 34 29 W |
| Saint Alphonsus Church | Church | 132 | Baltimore | 39 20 18 N | 076 51 39 W |
| Saint Alphonsus Roman Catholic Church | Church | 26 | Baltimore (city) | 39 17 35 N | 076 37 05 W |
| Saint Alphonsus School | School | 24 | Baltimore (city) | 39 17 33 N | 076 37 04 W |
| Saint Alphonsus School (historical) | School | 33 | St. Mary's | 38 11 58 N | 076 23 38 W |
| Saint Ambrose Catholic Church | Church | 62 | Prince George's | 38 55 44 N | 076 54 29 W |
| Saint Ambrose Roman Catholic Church | Church | 128 | Baltimore (city) | 39 20 29 N | 076 40 08 W |
| Saint Ambrose School | School | 128 | Baltimore (city) | 39 20 31 N | 076 40 09 W |
| Saint Ambroses School | School | 53 | Prince George's | 38 55 42 N | 076 54 25 W |
| Saint Andrew Apostle Church | Church | 130 | Montgomery | 39 02 50 N | 077 01 52 W |
| Saint Andrew by the Bay Catholic Church | Church | 9 | Anne Arundel | 39 01 54 N | 076 26 48 W |
| Saint Andrew Church | Church | 159 | Washington | 39 36 34 N | 077 47 13 W |
| Saint Andrew Lutheran Church | Church | 105 | Montgomery | 39 00 52 N | 077 02 58 W |
| Saint Andrew Park | Park | 36 | St. Mary's | 38 17 25 N | 076 33 04 W |
| Saint Andrews Catholic Church | Church | 3 | Worcester | 38 26 59 N | 075 03 19 W |
| Saint Andrews Cemetery | Cemetery | 11 | Anne Arundel | 38 53 40 N | 076 30 41 W |
| Saint Andrews Cemetery | Cemetery | 34 | Baltimore | 39 16 48 N | 076 30 59 W |
| Saint Andrews Cemetery | Cemetery | 38 | St. Mary's | 38 17 17 N | 076 33 06 W |
| Saint Andrews Church | Church | 14 | Anne Arundel | 39 08 06 N | 076 31 57 W |
| Saint Andrews Church | Church | 1 | Somerset | 38 06 30 N | 075 47 25 W |
| Saint Andrews Church | Church | 38 | St. Mary's | 38 17 17 N | 076 33 06 W |
| Saint Andrews Episcopal Church | Church | 14 | Dorchester | 38 37 52 N | 075 51 42 W |
| Saint Andrews Episcopal Church | Church | 180 | Howard | 39 17 42 N | 077 01 27 W |
| Saint Andrews Episcopal Church | Church | 21 | Queen Anne's | 39 11 05 N | 075 51 29 W |
| Saint Andrews Episcopal Church | Church | 4 | Somerset | 38 12 10 N | 075 41 39 W |
| Saint Andrews Episcopal Church | Church | 177 | Washington | 39 39 23 N | 077 55 40 W |
| Saint Andrews Episcopal School | School | 82 | Montgomery | 39 00 15 N | 077 07 30 W |
| Saint Andrews Estates | Populated Place | 38 | St. Mary's | 38 17 32 N | 076 32 57 W |
| Saint Andrews Lutheran Church | Church | 109 | Baltimore | 39 23 03 N | 076 34 24 W |
| Saint Andrews Orthodox Presbyterian Church | Church | 43 | Baltimore (city) | 39 19 07 N | 076 34 15 W |
| Saint Andrews Russian Orthodox Church | Church | 34 | Baltimore (city) | 39 17 27 N | 076 35 16 W |