Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Wynfield | Populated Place | 168 | Howard | 39 17 40 N | 076 56 29 W |
| Wyngate | Populated Place | 98 | Montgomery | 39 00 38 N | 077 07 20 W |
| Wyngate Elementary School | School | 97 | Montgomery | 39 00 35 N | 077 07 41 W |
| Wyngate Woods Park | Park | 105 | Montgomery | 39 00 38 N | 077 07 48 W |
| Wynne | Populated Place | 0 | St. Mary's | 38 06 35 N | 076 24 19 W |
| Wynne Post Office (historical) | Post Office | 0 | St. Mary's | 38 06 37 N | 076 24 16 W |
| Wynnewood | Populated Place | 31 | Baltimore | 39 14 05 N | 076 41 49 W |
| WYRE-AM (Annapolis) | Tower | 5 | Anne Arundel | 38 58 13 N | 076 30 27 W |
| WYST-AM (Baltimore) | Tower | 7 | Baltimore (city) | 39 16 38 N | 076 37 58 W |
| WYST-FM (Baltimore) | Tower | 127 | Baltimore (city) | 39 20 20 N | 076 40 01 W |
| WZYQ-FM (Braddock Heights) | Tower | 466 | Frederick | 39 27 50 N | 077 29 43 W |
| Yale Heights Baptist Chapel | Church | 64 | Baltimore (city) | 39 16 21 N | 076 41 34 W |
| Yantz Creek | Bay | 7 | Anne Arundel | 39 04 03 N | 076 33 37 W |
| Yapp Marsh | Swamp | 3 | Kent | 39 21 28 N | 076 02 37 W |
| Yarema Ditch | Canal | 15 | Caroline | 39 04 52 N | 075 44 36 W |
| Yarrowsburg | Populated Place | 184 | Washington | 39 22 28 N | 077 41 01 W |
| Yates Pond | Lake | 3 | Anne Arundel | 39 09 18 N | 076 29 25 W |
| Yeager | Populated Place | 160 | Frederick | 39 23 50 N | 077 18 16 W |
| Yellow Bank | Bar | -3 | St. Mary's | 38 09 16 N | 076 30 12 W |
| Yellow Bank | Cape | 3 | St. Mary's | 38 14 45 N | 076 47 06 W |
| Yellow Bank | Populated Place | 6 | St. Mary's | 38 15 38 N | 076 48 03 W |
| Yellow Bank Point Bar | Bar | -3 | St. Mary's | 38 14 40 N | 076 47 01 W |
| Yellow Bank Stream | Cape | 4 | Queen Anne's | 39 03 22 N | 076 04 27 W |
| Yellow Branch | Stream | | Harford | 39 32 36 N | 076 31 45 W |
| Yellow Falls | Falls | 17 | Montgomery | 38 58 14 N | 077 12 36 W |
| Yellow Pine Estates | Populated Place | 176 | Carroll | 39 26 53 N | 076 57 27 W |
| Yellow Springs | Populated Place | 182 | Frederick | 39 28 46 N | 077 27 36 W |
| Yellow Springs Elementary School | School | 131 | Frederick | 39 27 01 N | 077 27 16 W |
| Yellows Banks | Cliff | 4 | St. Mary's | 38 11 55 N | 076 25 58 W |
| Yeoho | Populated Place | 213 | Baltimore | 39 34 17 N | 076 43 18 W |
| Yingling Cemetery | Cemetery | 126 | Frederick | 39 16 47 N | 077 25 09 W |
| YMCA | Building | 126 | Montgomery | 39 10 14 N | 077 12 24 W |
| YMCA Silver Spring Community Branch Park | Park | 124 | Montgomery | 39 05 30 N | 077 03 23 W |
| Yoder School | School | 715 | Garrett | 39 42 47 N | 079 08 57 W |
| Yonkers | Populated Place | 381 | Allegany | 39 41 42 N | 078 38 56 W |
| York Ridge | Populated Place | 128 | Baltimore | 39 24 40 N | 076 38 24 W |
| York Ridge Center Business Park | Locale | | Baltimore | 39 25 56 N | 076 37 28 W |
| York Road Plaza Shopping Center | Locale | | Baltimore | 39 22 22 N | 076 36 40 W |
| Yorke (historical) | Populated Place | 11 | Talbot | 38 53 14 N | 076 04 29 W |
| Yorkland | Populated Place | 244 | Carroll | 39 32 08 N | 076 56 02 W |
| Yorkleigh | Populated Place | 141 | Baltimore | 39 23 12 N | 076 36 22 W |
| Yorkridge Shopping Center | Locale | 113 | Baltimore | 39 25 50 N | 076 37 27 W |
| Yorkshire Island (historical) | Island | -3 | Somerset | 37 57 52 N | 075 53 52 W |
| Yorkshire Knolls | Populated Place | 46 | Prince George's | 38 53 28 N | 076 53 09 W |
| Yorktown | Populated Place | 32 | Anne Arundel | 39 06 42 N | 076 37 51 W |
| Yorktown | Populated Place | 6 | Anne Arundel | 39 01 35 N | 076 25 22 W |
| Yorktown | Populated Place | 142 | Baltimore | 39 23 01 N | 076 36 24 W |
| Yorktown Elementary School | School | 35 | Prince George's | 38 59 22 N | 076 43 57 W |
| Yorktowne Plaza Shopping Center | Locale | 115 | Baltimore | 39 27 54 N | 076 38 06 W |
| Yorkwood Elementary School | School | 94 | Baltimore (city) | 39 21 48 N | 076 34 53 W |
| Young Israel Shomrai Emunah Synagogue | Church | 118 | Montgomery | 39 02 24 N | 077 01 44 W |
| Young Israel Shomrai Emunah Synagogue | Church | 112 | Montgomery | 39 01 55 N | 077 01 20 W |
| Young Mans Fancy | Populated Place | 238 | Carroll | 39 42 39 N | 076 47 45 W |
| Youngs Switch (historical) | Locale | 61 | Charles | 38 33 53 N | 076 57 59 W |
| Yourtee Spring | Spring | 179 | Washington | 39 22 32 N | 077 39 33 W |
| Youths Benefit School | School | 180 | Harford | 39 31 49 N | 076 26 18 W |
| Zehner Hill | Summit | 908 | Garrett | 39 42 56 N | 079 12 17 W |
| Zekiah Swamp | Swamp | 50 | Charles | 38 31 28 N | 076 57 12 W |
| Zekiah Swamp Natural Environment Area | Park | 3 | Charles | 38 25 05 N | 076 56 10 W |
| Zekiah Swamp Run | Stream | | Charles | 38 25 13 N | 076 56 38 W |
| Zekiah Valley | Populated Place | 54 | Charles | 38 34 14 N | 076 51 27 W |
| Zeman | Populated Place | 41 | Anne Arundel | 39 06 55 N | 076 36 23 W |
| Zera Israel Synagogue | Church | 140 | Baltimore (city) | 39 21 58 N | 076 42 25 W |
| Ziegler Estates | Populated Place | 142 | Frederick | 39 31 32 N | 077 25 44 W |
| Ziem Winery | Locale | 134 | Washington | 39 32 32 N | 077 48 16 W |
| Zigler School | School | 38 | Anne Arundel | 39 06 07 N | 076 47 12 W |
| Zihlman | Populated Place | 486 | Allegany | 39 40 05 N | 078 54 54 W |
| Zimmermans Cemetery | Cemetery | 201 | Carroll | 39 42 05 N | 076 48 28 W |
| Zion | Populated Place | 118 | Cecil | 39 40 32 N | 075 57 54 W |
| Zion Acres | Populated Place | 113 | Cecil | 39 40 31 N | 075 58 07 W |
| Zion Apostolic Faith Church | Church | 33 | Prince George's | 38 53 59 N | 076 54 48 W |
| Zion Baptist Church | Church | 41 | Baltimore (city) | 39 18 34 N | 076 35 55 W |
| Zion Baptist Church | Church | 6 | Dorchester | 38 34 01 N | 076 04 51 W |
| Zion Cemetery | Cemetery | 120 | Cecil | 39 40 36 N | 075 58 00 W |
| Zion Cemetery | Cemetery | 43 | Charles | 38 29 23 N | 077 07 18 W |
| Zion Cemetery | Cemetery | 0 | Dorchester | 38 17 48 N | 076 04 08 W |
| Zion Cemetery | Cemetery | 171 | Frederick | 39 26 45 N | 077 32 45 W |
| Zion Cemetery | Cemetery | 124 | Frederick | 39 29 13 N | 077 25 49 W |
| Zion Cemetery | Cemetery | 137 | Frederick | 39 19 33 N | 077 21 19 W |
| Zion Cemetery | Cemetery | 60 | Howard | 39 11 20 N | 076 45 13 W |
| Zion Cemetery | Cemetery | 174 | Washington | 39 38 42 N | 077 43 05 W |
| Zion Cemetery | Cemetery | 9 | Wicomico | 38 30 57 N | 075 43 12 W |
| Zion Cemetery | Cemetery | 15 | Worcester | 38 15 44 N | 075 36 26 W |
| Zion Church | Church | 261 | Allegany | 39 41 29 N | 078 43 42 W |
| Zion Church | Church | 18 | Calvert | 38 21 32 N | 076 27 03 W |
| Zion Church | Church | 248 | Carroll | 39 29 57 N | 076 59 59 W |
| Zion Church | Church | 40 | Charles | 38 29 19 N | 077 07 19 W |
| Zion Church | Church | 133 | Montgomery | 39 05 44 N | 077 08 54 W |
| Zion Church | Church | 53 | Prince George's | 38 59 04 N | 076 59 20 W |
| Zion Church | Church | 35 | St. Mary's | 38 15 05 N | 076 25 52 W |
| Zion Church | Church | 34 | St. Mary's | 38 14 47 N | 076 25 35 W |
| Zion Church | Church | 6 | Wicomico | 38 21 41 N | 075 44 14 W |
| Zion Church | Church | 9 | Wicomico | 38 30 55 N | 075 43 09 W |
| Zion Church | Church | 6 | Worcester | 38 25 48 N | 075 09 01 W |
| Zion Church of Christ | Church | 53 | Baltimore (city) | 39 20 14 N | 076 34 27 W |
| Zion Episcopal Church | Church | 137 | Frederick | 39 19 33 N | 077 21 19 W |
| Zion Evangelical Lutheran Church | Church | 79 | Baltimore (city) | 39 20 40 N | 076 34 27 W |
| Zion Evangelical Lutheran Church | Church | 733 | Garrett | 39 37 51 N | 079 19 05 W |
| Zion Lutheran Church | Church | 4 | Baltimore (city) | 39 17 29 N | 076 36 35 W |
| Zion Lutheran Church | Church | 166 | Frederick | 39 26 39 N | 077 32 49 W |
| Zion Lutheran Church | Church | 128 | Washington | 39 36 02 N | 077 49 25 W |
| Zion Methodist Church | Church | 13 | Wicomico | 38 24 02 N | 075 32 05 W |
| Zion Park Cemetery | Cemetery | 246 | Allegany | 39 42 28 N | 078 42 46 W |
| Zion Post Office (historical) | Post Office | 118 | Cecil | 39 40 32 N | 075 57 56 W |
| Zion Presbyterian Church (historical) | Church | 122 | Cecil | 39 40 37 N | 075 57 59 W |
| Zion Reformed Church of Charlesville | Church | 125 | Frederick | 39 29 14 N | 077 25 50 W |
| Zion Tabernacle | Church | 121 | Baltimore (city) | 39 19 42 N | 076 41 14 W |
| Zion the Grace Bible Church | Church | 122 | Cecil | 39 40 37 N | 075 57 59 W |
| Zion United Church of Christ | Church | 613 | Allegany | 39 39 18 N | 078 55 20 W |
| Zion United Church of Christ | Church | 190 | Allegany | 39 39 22 N | 078 46 05 W |