Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Phair School | School | 74 | Prince George's | 39 06 13 N | 076 51 53 W |
| Pheasant Farm | Populated Place | 56 | Charles | 38 34 38 N | 076 59 55 W |
| Pheasant Ridge | Populated Place | 135 | Harford | 39 36 28 N | 076 22 12 W |
| Pheasant Ridge | Ridge | 977 | Garrett | 39 25 41 N | 079 15 32 W |
| Pheasant Ridge Mobile Estates | Populated Place | 238 | Carroll | 39 21 34 N | 077 08 59 W |
| Pheasant Run | Populated Place | 217 | Carroll | 39 30 57 N | 076 54 57 W |
| Pheasant Run | Populated Place | 53 | Prince George's | 39 03 24 N | 076 50 04 W |
| Pheasant Run | Populated Place | 12 | Wicomico | 38 19 05 N | 075 35 15 W |
| Pheasant Run Community Park | Park | 50 | Prince George's | 39 03 24 N | 076 49 52 W |
| Pheasantfield | Populated Place | 6 | Queen Anne's | 39 14 25 N | 075 58 33 W |
| Phelps | Populated Place | 317 | Frederick | 39 27 14 N | 077 29 50 W |
| Phelps | Populated Place | 83 | Prince George's | 38 50 59 N | 076 52 16 W |
| Phelps Corner | Populated Place | 78 | Prince George's | 38 48 20 N | 076 58 23 W |
| Phelps Luck | Populated Place | 140 | Howard | 39 13 15 N | 076 49 07 W |
| Phelps Luck Elementary School | School | 142 | Howard | 39 13 19 N | 076 49 05 W |
| Philadelphia Brigade Monument | Park | 154 | Washington | 39 28 42 N | 077 44 56 W |
| Philadelphia Gunning Club (historical) | Locale | 2 | Harford | 39 23 02 N | 076 16 29 W |
| Philadelphia Station | Populated Place | 21 | Harford | 39 28 05 N | 076 16 19 W |
| Philip Creek | Stream | | Kent | 39 08 33 N | 076 08 28 W |
| Philips Delight School | School | 424 | Frederick | 39 36 21 N | 077 28 57 W |
| Phillips Creek | Stream | | Dorchester | 38 33 50 N | 076 12 59 W |
| Phillips Island (historical) | Island | -6 | Harford | 39 18 05 N | 076 18 19 W |
| Phillips Library | Building | 184 | Frederick | 39 40 53 N | 077 21 08 W |
| Phillips Point | Cape | -2 | Dorchester | 38 13 58 N | 075 58 20 W |
| Philmore Park (subdivision) | Populated Place | 13 | Wicomico | 38 21 53 N | 075 33 35 W |
| Philpots Islands | Island | 0 | Queen Anne's | 38 53 46 N | 076 20 12 W |
| Phoenix | Populated Place | 96 | Baltimore | 39 30 59 N | 076 36 58 W |
| Phoenix (historical) | Populated Place | 332 | Allegany | 39 30 39 N | 079 02 25 W |
| Phoenix 2 at Emory Grove Center School | School | 162 | Montgomery | 39 09 16 N | 077 09 49 W |
| Phoenix Church | Church | 1 | Somerset | 37 59 49 N | 075 47 03 W |
| Phoenix Hill | Summit | 626 | Garrett | 39 31 12 N | 079 03 22 W |
| Phoenix Post Office | Post Office | 183 | Baltimore | 39 31 08 N | 076 33 35 W |
| Phyllis E Williams Academic Center | School | 35 | Prince George's | 38 53 21 N | 076 50 24 W |
| Phyllis Estates | Populated Place | 11 | Anne Arundel | 39 09 30 N | 076 35 13 W |
| Phylpres | Populated Place | 112 | Frederick | 39 36 30 N | 077 18 04 W |
| Physical Education Complex | Locale | | Baltimore (city) | 39 18 35 N | 076 39 28 W |
| Physicians Memorial Hospital | Hospital | 55 | Charles | 38 31 46 N | 076 58 21 W |
| Picardy | Populated Place | 281 | Allegany | 39 32 20 N | 078 30 48 W |
| Piccowaxen Creek | Stream | | Charles | 38 19 50 N | 076 56 39 W |
| Piccowaxen Middle School | School | 35 | Charles | 38 21 42 N | 076 56 29 W |
| Pickell Hill | Summit | 681 | Garrett | 39 33 23 N | 079 01 43 W |
| Pickering Creek | Bay | 12 | Talbot | 38 52 02 N | 076 06 58 W |
| Picketts Corner | Populated Place | 261 | Carroll | 39 24 29 N | 077 03 12 W |
| Pickwick | Populated Place | 128 | Baltimore | 39 22 25 N | 076 41 08 W |
| Pickwick Jewish Center | Church | 123 | Baltimore (city) | 39 22 08 N | 076 40 49 W |
| Piclic Run | Stream | | Allegany | 39 39 51 N | 078 27 39 W |
| Picnic Woods Estates | Populated Place | 175 | Frederick | 39 26 00 N | 077 34 59 W |
| Picnicking Museum Gardens | Park | 93 | Frederick | 39 26 12 N | 077 24 19 W |
| Picture Hill Landing | Locale | 5 | Caroline | 38 46 25 N | 075 57 49 W |
| Pied Piper School (historical) | School | 91 | Montgomery | 39 02 56 N | 076 58 42 W |
| Piedmon Dam | Dam | 397 | Garrett | 39 30 03 N | 079 06 54 W |
| Piedmont Acres | Populated Place | 171 | Carroll | 39 30 20 N | 076 53 44 W |
| Piedmont Dam | Dam | 393 | Garrett | 39 30 03 N | 079 06 51 W |
| Pier 1 | Locale | 0 | Baltimore (city) | 39 17 08 N | 076 36 39 W |
| Pier 2 | Locale | 0 | Baltimore (city) | 39 17 08 N | 076 36 33 W |
| Pier 3 | Locale | 1 | Baltimore (city) | 39 17 06 N | 076 36 30 W |
| Pier 4 | Locale | 1 | Baltimore (city) | 39 17 07 N | 076 36 25 W |
| Pier 5 | Locale | 2 | Baltimore (city) | 39 17 07 N | 076 36 21 W |
| Pier 6 Concert Pavilion | Building | | Baltimore (city) | 39 17 00 N | 076 36 15 W |
| Pier 7 | Locale | 1 | Baltimore (city) | 39 16 53 N | 076 36 08 W |
| Pier Street Marina | Locale | 0 | Talbot | 38 40 58 N | 076 10 22 W |
| Pierce Branch | Stream | | Baltimore | 39 26 04 N | 076 31 20 W |
| Pig Point | Cape | 0 | Cecil | 39 22 00 N | 075 52 33 W |
| Pig Pond | Reservoir | 4 | Anne Arundel | 38 52 34 N | 076 31 42 W |
| Pigeon House Corner | Populated Place | 10 | Anne Arundel | 38 59 29 N | 076 42 12 W |
| Pigeonhouse Creek | Bay | -2 | Somerset | 38 12 00 N | 075 51 60 W |
| Pigg Point | Cape | 5 | Caroline | 38 53 12 N | 075 50 21 W |
| Pigg Point | Cape | 1 | Prince George's | 38 46 08 N | 076 42 13 W |
| Pigmans Ferry Campground | Locale | 178 | Allegany | 39 32 18 N | 078 38 28 W |
| Pika Industrial Park | Locale | 61 | Charles | 38 37 13 N | 076 54 28 W |
| Pike Branch | Stream | | Frederick | 39 22 29 N | 077 26 02 W |
| Pike Center Shopping Center | Locale | 121 | Montgomery | 39 03 27 N | 077 07 08 W |
| Pike Park Plaza Shopping Center | Locale | 153 | Baltimore | 39 17 13 N | 076 45 44 W |
| Pike Park Plaza South Shopping Center | Locale | 130 | Baltimore | 39 17 00 N | 076 45 43 W |
| Pike Station Post Office | Post Office | 116 | Montgomery | 39 03 32 N | 077 07 24 W |
| Pikes Creek | Stream | | Worcester | 38 03 49 N | 075 21 21 W |
| Pikes Creek Marsh | Swamp | 0 | Worcester | 38 03 32 N | 075 21 26 W |
| Pikesville | Populated Place | 155 | Baltimore | 39 22 27 N | 076 43 21 W |
| Pikesville Fire Department Station 2 | Building | | Baltimore | 39 22 29 N | 076 43 26 W |
| Pikesville High School | School | 143 | Baltimore | 39 22 37 N | 076 41 54 W |
| Pikesville Memorial Library | Building | 154 | Baltimore | 39 22 27 N | 076 43 19 W |
| Pikesville Middle School | School | 146 | Baltimore | 39 22 39 N | 076 42 23 W |
| Pikesville Plaza Shopping Center | Locale | 158 | Baltimore | 39 22 43 N | 076 43 30 W |
| Pikesville Post Office | Post Office | 157 | Baltimore | 39 22 45 N | 076 43 19 W |
| Pikesville Public School (historical) | School | 158 | Baltimore | 39 22 38 N | 076 43 28 W |
| Pikesville Reservoir | Reservoir | 172 | Baltimore | 39 23 10 N | 076 43 44 W |
| Pikesville Reservoir Dam | Dam | 165 | Baltimore | 39 23 06 N | 076 43 47 W |
| Pikesville Shopping Center | Locale | | Baltimore | 39 22 33 N | 076 43 32 W |
| Pikesville Volunteer Fire Company Station 32 | Building | | Baltimore | 39 22 40 N | 076 43 13 W |
| Pilchard Creek | Stream | | Worcester | 38 05 22 N | 075 31 60 W |
| Pilgrim Holiness Church | Church | 6 | Caroline | 38 58 33 N | 075 48 17 W |
| Pilgrim Holiness Church | Church | 63 | Charles | 38 36 19 N | 076 55 40 W |
| Pilgrim Holiness Church | Church | 14 | Dorchester | 38 37 43 N | 075 51 38 W |
| Pilgrim Holiness Church (historical) | Church | 30 | Baltimore (city) | 39 16 55 N | 076 38 56 W |
| Pilgrim Lutheran Church | Church | 63 | Montgomery | 38 57 29 N | 077 06 38 W |
| Pilot | Populated Place | 128 | Cecil | 39 42 14 N | 076 12 05 W |
| Pilot Station | Locale | 32 | Cecil | 39 40 59 N | 076 11 52 W |
| Pilots Cove Airport | Airport | 3 | Charles | 38 20 07 N | 076 52 43 W |
| Pimlico | Populated Place | 136 | Baltimore (city) | 39 21 01 N | 076 40 09 W |
| Pimlico Branch Enoch Pratt Free Library | Building | 133 | Baltimore (city) | 39 20 52 N | 076 40 24 W |
| Pimlico Elementary School | School | 135 | Baltimore (city) | 39 20 52 N | 076 40 04 W |
| Pimlico Middle School | School | 133 | Baltimore (city) | 39 21 13 N | 076 40 60 W |
| Pimlico Racetrack | Locale | 137 | Baltimore (city) | 39 21 13 N | 076 40 22 W |
| Pin Oak Village (subdivision) | Populated Place | 42 | Prince George's | 38 56 40 N | 076 43 39 W |
| Pin Point | Cape | 0 | Somerset | 38 06 42 N | 075 56 31 W |
| Pinch Valley Estates | Populated Place | 271 | Carroll | 39 36 35 N | 077 01 18 W |
| Pindell | Populated Place | 24 | Anne Arundel | 38 46 32 N | 076 40 59 W |
| Pindell Branch | Stream | | Anne Arundel | 38 46 18 N | 076 41 46 W |
| Pine Beach | Populated Place | 4 | Somerset | 38 14 47 N | 075 50 06 W |
| Pine Bluff | Populated Place | 42 | Anne Arundel | 39 01 26 N | 076 30 34 W |