William J. O'Malley (August 18, 1931 – July 15, 2023) was an American priest, teacher, author, and actor.

He taught Advanced Placement (AP) English and theology for 22 years at McQuaid Jesuit High School in Rochester, New York.

[3] O'Malley taught theology, AP English and later an elective called The Problem of God/Morality/Marriage/Fatherhood at Fordham Preparatory School in the Bronx until June 2012, when he was let go from his teaching position.

[14] In 1990, O'Malley received an honorary doctorate in humane letters from Le Moyne College.

In 2007, he received the F. Sadlier Dinger Award from educational publisher William H. Sadlier, Inc. in recognition of his outstanding contributions to the ministry of religious education in America, for which he received three Best Article Awards from the Catholic Press Association.