Blue Ball is a community in Butler and Warren counties, in the U.S. state of Ohio.^[1] The community was established in 1820 at the intersection of the Dixie Highway (later U.S. Route 25). Blue Ball was annexed by nearby Middletown in 1994.^[2]

Blue Ball was so named because that image appeared on its tavern's signboard for the benefit of the illiterate.^[3]