Cleveland was a city in the northeastern part of the Ohio region of the United States of America, located on Earth's North American continent.
Cleveland was the home of the baseball team known as the Cleveland Indians. (TNG: "The Big Goodbye")
In 1947, when his United States Army Air Corps captors demanded to know where Martian invaders would land, Nog pointed randomly on a map of the United States. Captain Wainwright was incredulous that the aliens would choose to invade Cleveland. (DS9: "Little Green Men")
As part of a Dixon Hill adventure on the holodeck of the USS Enterprise (NCC-1701-D) in 2367, Guinan played Hill's cousin Gloria, from Cleveland. (TNG: "Clues")
Cleveland was near the campus of Kent State University. In 2372, Captain Janeway and Lt. B'Elanna Torres consulted a study regarding antimatter from Kent State. (VOY: "Deadlock")