John Francis O'Hern (June 4, 1874 – May 22, 1933) was an American prelate of the Roman Catholic Church who served as bishop of the Diocese of Rochester from 1929 until his death in 1933.
[1] Three of his brothers also entered the priesthood, and another served in the field staff of General John J. Pershing during World War I.
[2] He received his episcopal consecration on March 9, 1929, from Cardinal Patrick Hayes, with Archbishop Edward Hanna and Bishop Thomas O'Reilly serving as co-consecrators.
[2] During his tenure, he worked toward establishing ecumenical ties with non-Catholics and promoting numerous associations of the laity.
[3] He supported the Community Chest and Red Cross, and provided chaplains for Catholics attending secular colleges in the diocese.