Fifth Third Field is the name of two minor league baseball stadiums in Ohio. In both cases, the Ohio-based Fifth Third Bank purchased the naming rights to the stadium.

The larger and newer of the two stadiums is in Toledo. The Toledo Mud Hens, an International League team and the Triple-A affiliate of the Detroit Tigers, moved into its 10,000-seat home in 2002.

The other stadium by this name is in Dayton. This park, with a total capacity of 8,200, was built in 2000 for the Dayton Dragons, a Midwest League team and a Single-A affiliate of the nearby Cincinnati Reds.