| Fort Preble | |
|---|---|
| Part of Harbor Defenses of Portland | |
| South Portland, Maine | |
 Fort Preble, showing some of the incomplete Third System casemates built during the Civil War. Spring Point Ledge Light and Fort Gorges are in the background. | |
  Fort Preble Location in Maine | |
| Coordinates | 43°38′55″N 70°13′35″W / 43.64861°N 70.22639°W |
| Type | Coastal Defense |
| Site information | |
| Owner | Southern Maine Community College |
| Open to the public | yes |
| Site history | |
| Built | 1808 |
| Built by | United States Army |
| In use | 1808–1950 |
| Battles/wars | War of 1812 American Civil War World War I World War II |
Fort Preble was a military fort in South Portland, Maine, United States, built in 1808 and progressively added to through 1906. The fort was active during all major wars from the War of 1812 through World War II. The fort was deactivated in 1950. It is now on the campus of Southern Maine Community College.