Cassaday is a surname. Notable people with the surname include:
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Helen Cassaday, British neuroscientist
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John Cassaday
Johnny Mac Cassaday (; December 14, 1971 – September 9, 2024) was an American comic book artist, writer, and television director. He was best known for his work on the critically acclaimed ''Planetary (comics), Planetary'' with writer Warren Ell ...
(1971–2024), American comic book artist and writer
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