| Fort Sumner | |
|---|---|
| Munjoy Hill, Portland, Maine | |
&sq=Facebook&lang=en&file=File:Fort_Sumner_Park.jpg) Fort Sumner Park (2023) | |
&sq=Facebook&lang=en&file=File:USA_Maine_location_map.svg)  Fort Sumner Location in Maine &sq=Facebook&lang=en&file=File:Usa_edcp_location_map.svg) Fort Sumner Fort Sumner (the United States) | |
| Coordinates | 43°40′03″N 70°15′03″W / 43.66750°N 70.25083°W |
| Type | Coastal Defense |
| Site information | |
| Owner | City of Portland |
| Controlled by | City of Portland |
| Site history | |
| Built | 1794 |
| In use | 1794-1820s |
| Demolished | circa 1835? |
| Battles/wars | War of 1812 |
Fort Sumner was a coastal defense fortification on Munjoy Hill in Portland, Maine, United States. It was built in 1794 as part of the first system of coastal fortifications built by the United States. It was reportedly originally named Fort Allen after the nearby Revolutionary War battery that probably became part of Fort Sumner, but was renamed in 1797 after Increase Sumner, the incumbent Governor of Massachusetts, of which Maine was then a part.[1][2][3] The location is now Fort Sumner Park (or Standpipe Park).