Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Red Ridge | Ridge | 812 | Garrett | 39 38 30 N | 079 06 03 W |
| Rock Ridge | Ridge | 192 | Harford | 39 38 04 N | 076 25 02 W |
| Shriver Ridge | Ridge | 461 | Allegany | 39 43 38 N | 078 42 09 W |
| Shriver Ridge | Ridge | 445 | Allegany | 39 43 06 N | 078 42 38 W |
| Soldiers Delight | Ridge | 201 | Baltimore | 39 24 46 N | 076 50 03 W |
| Solomon Ridge | Ridge | 777 | Garrett | 39 32 28 N | 079 09 01 W |
| Sorrell Ridge | Ridge | 288 | Allegany | 39 33 37 N | 078 28 03 W |
| Stone Quarry Ridge | Ridge | 258 | Washington | 39 38 13 N | 077 59 47 W |
| Stratford Ridge | Ridge | 291 | Allegany | 39 33 36 N | 078 33 43 W |
| Thomas Ridge | Ridge | 692 | Garrett | 39 42 48 N | 079 28 35 W |
| Timber Ridge | Ridge | 237 | Washington | 39 43 27 N | 078 08 06 W |
| Tom Ridge | Ridge | 807 | Garrett | 39 30 46 N | 079 12 32 W |
| Tonoloway Ridge | Ridge | 325 | Washington | 39 39 36 N | 078 15 53 W |
| Turkey Lodge Ridge | Ridge | 817 | Garrett | 39 37 09 N | 079 05 55 W |
| Walnut Ridge | Ridge | 290 | Allegany | 39 34 58 N | 078 40 06 W |
| Whittaker Ridge | Ridge | 290 | Allegany | 39 41 05 N | 078 32 50 W |
| Winding Ridge | Ridge | 774 | Garrett | 39 41 17 N | 079 20 04 W |
| Abbottston Elementary School | School | 62 | Baltimore (city) | 39 19 29 N | 076 35 59 W |
| Abell School | School | 6 | St. Mary's | 38 15 37 N | 076 45 32 W |
| Aberdeen High School | School | 49 | Harford | 39 30 58 N | 076 10 17 W |
| Aberdeen Middle School | School | 39 | Harford | 39 30 54 N | 076 09 53 W |
| Abingdon Elementary School | School | 62 | Harford | 39 28 40 N | 076 19 31 W |
| Academy Public School (historical) | School | 3 | Dorchester | 38 34 30 N | 076 04 38 W |
| Accident Elementary School | School | 724 | Garrett | 39 37 38 N | 079 19 15 W |
| Accokeek School (historical) | School | 56 | Prince George's | 38 40 07 N | 077 01 36 W |
| Acorn Hill Childrens Center | School | 82 | Montgomery | 39 00 41 N | 077 01 22 W |
| Adamstown Public School (historical) | School | 94 | Frederick | 39 18 29 N | 077 28 32 W |
| Addison School | School | 53 | Prince George's | 38 47 30 N | 077 00 11 W |
| Adelphi Elementary School | School | 53 | Prince George's | 39 00 02 N | 076 58 27 W |
| Adelphi School | School | 53 | Prince George's | 39 00 01 N | 076 58 25 W |
| Adkinson School (historical) | School | 14 | Worcester | 38 13 02 N | 075 33 30 W |
| Ager Road School | School | 15 | Prince George's | 38 57 55 N | 076 58 21 W |
| Albert Einstein High School | School | 111 | Montgomery | 39 02 20 N | 077 04 01 W |
| Alexander Hamilton Elementary School | School | 63 | Baltimore (city) | 39 17 51 N | 076 39 57 W |
| Alicia Crossland Public School (historical) | School | 22 | Baltimore (city) | 39 17 24 N | 076 37 27 W |
| All Saints School | School | 127 | Baltimore (city) | 39 19 50 N | 076 41 29 W |
| Allegany Community College | School | 195 | Allegany | 39 39 09 N | 078 43 46 W |
| Allegany High School | School | 239 | Allegany | 39 39 20 N | 078 46 32 W |
| Allenwood Elementary School | School | 76 | Prince George's | 38 48 10 N | 076 55 49 W |
| Alta Vista Elementary School (historical) | School | 107 | Montgomery | 39 00 42 N | 077 06 47 W |
| American College of Cardiology | School | 113 | Montgomery | 39 00 21 N | 077 06 41 W |
| Ammendale Normal Institute | School | 55 | Prince George's | 39 03 11 N | 076 54 09 W |
| Andover High School | School | 57 | Anne Arundel | 39 11 45 N | 076 39 42 W |
| Andrew Jackson Middle School | School | 82 | Prince George's | 38 50 27 N | 076 54 31 W |
| Andrew Small Male and Female Academy (historical) | School | 129 | Montgomery | 39 06 08 N | 077 17 06 W |
| Andrews School | School | 74 | Montgomery | 38 58 24 N | 077 00 23 W |
| Annapolis Elementary School | School | 5 | Anne Arundel | 38 58 35 N | 076 29 17 W |
| Annapolis Junior High School (historical) | School | 8 | Anne Arundel | 38 58 19 N | 076 30 19 W |
| Annapolis Middle School | School | 12 | Anne Arundel | 38 57 30 N | 076 30 41 W |
| Annapolis Road Middle School | School | 25 | Prince George's | 38 56 19 N | 076 55 30 W |
| Annapolis Sailing School | School | 0 | Anne Arundel | 38 58 01 N | 076 28 31 W |
| Annapolis Senior High School | School | 23 | Anne Arundel | 38 58 28 N | 076 33 57 W |
| Anne Arundel Academy | School | 32 | Anne Arundel | 38 54 09 N | 076 38 31 W |
| Anne Arundel Community College | School | 31 | Anne Arundel | 39 02 58 N | 076 30 44 W |
| Anne Arundel County Learning Center | School | 5 | Anne Arundel | 38 58 53 N | 076 30 01 W |
| Anne Arundel Free School | School | 27 | Anne Arundel | 38 58 43 N | 076 37 36 W |
| Antietam School | School | 164 | Washington | 39 38 20 N | 077 43 01 W |
| Appeal School | School | 29 | Calvert | 38 22 32 N | 076 26 13 W |
| Apple Grove Elementary School | School | 45 | Prince George's | 38 47 19 N | 076 57 46 W |
| Arbutus Elementary School | School | 29 | Baltimore | 39 14 51 N | 076 41 48 W |
| Arbutus Middle School | School | 44 | Baltimore | 39 14 53 N | 076 42 20 W |
| Archbishop Curley High School | School | 42 | Baltimore (city) | 39 18 46 N | 076 33 55 W |
| Archbishop Keough High School | School | 36 | Baltimore (city) | 39 16 07 N | 076 39 59 W |
| Archbishop Neale School | School | 44 | Charles | 38 31 42 N | 076 59 12 W |
| Arcola School | School | 120 | Montgomery | 39 02 42 N | 077 02 22 W |
| Ardmore Elementary School | School | 57 | Prince George's | 38 55 57 N | 076 50 48 W |
| Argyle Middle School | School | 124 | Montgomery | 39 05 26 N | 077 02 53 W |
| Arlington Echo Outdoor Education Center | School | 15 | Anne Arundel | 39 04 37 N | 076 36 24 W |
| Arlington Elementary School | School | 135 | Baltimore (city) | 39 21 01 N | 076 41 04 W |
| Armistead Gardens School | School | 32 | Baltimore (city) | 39 18 15 N | 076 33 10 W |
| Armistead Public School (historical) | School | 16 | Baltimore (city) | 39 16 24 N | 076 36 42 W |
| Arnold Elementary School | School | 38 | Anne Arundel | 39 02 05 N | 076 30 13 W |
| Arrowhead Elementary School | School | 79 | Prince George's | 38 51 25 N | 076 50 34 W |
| Arthur Middleton Elementary School | School | 63 | Charles | 38 36 09 N | 076 55 18 W |
| Arundel Elementary School | School | 34 | Baltimore (city) | 39 15 07 N | 076 37 40 W |
| Arundel High School | School | 71 | Anne Arundel | 39 04 18 N | 076 40 55 W |
| Arundel Middle School | School | 58 | Anne Arundel | 39 04 20 N | 076 41 10 W |
| Ascension School | School | 24 | Baltimore | 39 14 24 N | 076 41 23 W |
| Ashburton Elementary School | School | 122 | Baltimore (city) | 39 19 51 N | 076 40 02 W |
| Ashburton School | School | 112 | Montgomery | 39 01 09 N | 077 07 39 W |
| Asher Glade School (historical) | School | 591 | Garrett | 39 42 16 N | 079 26 52 W |
| Aspen Hill School | School | 105 | Montgomery | 39 04 18 N | 077 06 03 W |
| Aspen Institute | School | 12 | Queen Anne's | 38 55 05 N | 076 07 43 W |
| Atholton Adventist School | School | 116 | Howard | 39 11 33 N | 076 52 07 W |
| Atholton Elementary School | School | 105 | Howard | 39 11 08 N | 076 51 48 W |
| Atholton High Schools | School | 130 | Howard | 39 11 18 N | 076 52 51 W |
| Avalon Elementary School | School | 80 | Prince George's | 38 47 27 N | 076 56 30 W |
| Avilton School | School | 749 | Garrett | 39 38 36 N | 079 02 25 W |
| Avondale School (historical) | School | 52 | Prince George's | 39 05 24 N | 076 51 08 W |
| Ayrlawn Elementary School (historical) | School | 95 | Montgomery | 39 00 17 N | 077 07 03 W |
| Back River School | School | 9 | Baltimore | 39 17 19 N | 076 25 31 W |
| Baden Elementary School | School | 61 | Prince George's | 38 39 38 N | 076 46 12 W |
| Bainbridge Elementary School | School | 134 | Cecil | 39 36 23 N | 076 04 27 W |
| Bais Yaakov School for Girls | School | 167 | Baltimore | 39 25 38 N | 076 43 32 W |
| Bais Yaakov School for Girls | School | 132 | Baltimore (city) | 39 20 58 N | 076 39 26 W |
| Bakerfield Elementary School | School | 40 | Harford | 39 30 47 N | 076 10 15 W |
| Bald Eagle School (historical) | School | 45 | Prince George's | 38 40 34 N | 076 43 17 W |
| Ballenger Creek Elementary School | School | 85 | Frederick | 39 22 36 N | 077 25 43 W |
| Ballenger Creek Middle School | School | 96 | Frederick | 39 23 05 N | 077 26 32 W |
| Baltimore Academy of Visitation | School | 135 | Baltimore (city) | 39 22 02 N | 076 38 05 W |
| Baltimore Ballet Center | School | 36 | Baltimore (city) | 39 18 30 N | 076 37 23 W |
| Baltimore City College | School | 78 | Baltimore (city) | 39 19 32 N | 076 35 48 W |
| Baltimore Hebrew University | School | 137 | Baltimore (city) | 39 21 15 N | 076 41 17 W |
| Baltimore Highlands Elementary School | School | 28 | Baltimore | 39 14 12 N | 076 38 32 W |
| Baltimore Polytechnic Institute | School | 97 | Baltimore (city) | 39 20 48 N | 076 38 41 W |
| Baltimore School For The Arts | School | | Baltimore (city) | 39 17 52 N | 076 37 03 W |
| Baltimore School of the Bible | School | 45 | Baltimore (city) | 39 18 25 N | 076 37 50 W |
| Banneker School | School | 158 | Baltimore | 39 16 49 N | 076 44 29 W |
| Banneker School | School | 41 | St. Mary's | 38 19 47 N | 076 40 33 W |
| Bannockburn School | School | 88 | Montgomery | 38 58 29 N | 077 08 17 W |