John Keith Vernon (February 24, 1932 - February 1, 2005) was a Canadian actor who voiced Rhombus in Fallout: Brotherhood of Steel. He made a career in Hollywood after achieving initial television stardom in Canada.
Vernon was born on February 24, 1932 Adolphus Raymondus Vernon Agopsowicz in Regina, Saskatchewan. He was educated at the Banff School of Fine Arts and the Royal Academy of Dramatic Art in London before becoming a live stage actor on the early CBC. With his wife Nancy West, John Vernon was the father of actress Kate Vernon and singer Nan Vernon. On February 1, 2005, he died in Los Angeles, California of complications following heart surgery a few weeks before his 73rd birthday.