John Brown (April 4, 1904 - May 16, 1957) was an English radio and film actor.
He had major roles in several popular radio shows. He played Irma's love interest Al in My Friend Irma, Digby "Digger" O'Dell in The Life of Riley (a role he reprised for the first television incarnation of the show) and "Broadway" in The Damon Runyon Theatre. He also appeared in some notable films - Strangers on a Train (1951), The Day the Earth Stood Still (1951, uncredited) and The Wild One (1953) - and supplied the voice of Ro-Man in the 1953 B-film Robot Monster.
In early television, he was the second actor (after Hal March) to play "Harry Morton," the next-door neighbor of George Burns and Gracie Allen in their show, opposite Bea Benaderet. His tenure on the series lasted six months, and he was replaced by Fred Clark in June 1951.
In 1952, Brown became a victim of the Hollywood blacklist.