John J. Kenney (c. 1844 – August 7, 1893) was an American professional baseball player. He played outfield and second base for the Brooklyn Atlantics in , when that club belatedly joined the National Association of Professional Base Ball Players in its second season.
Kenney played five games during May of that season; in 19 at bats he did not get a base hit but is credited with one run batted in.
Previously he had been a regular outfielder for the Atlantics in 1867 and a substitute infielder during the next two seasons. In the first professional season, 1869, he played primarily third base in nine of 58 team games on record. Next season he was a regular outfielder and infielder for Union of Morrisania (now in the Bronx), a lesser one of fifteen professional teams in 1870.