Hara Arena was a 5,500-seat multi-purpose arena located in the Trotwood, Ohio suburb of Dayton. The facility began as a ballroom in 1957, added an arena in 1964 and grew to a six-building complex which closed in August 2016.

Trotwood is a city in Montgomery County, Ohio, United States. The population was 23,070 at the 2020 census. A suburb of Dayton, it is part of the Dayton metropolitan area. The city is served by the Trotwood-Madison City School District.