James Bull may refer to:
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James J. Bull
James Jeffrey Bull is Johann Friedrich Miescher Regents Professor in Molecular Biology at the University of Texas at Austin. He is best known for his influential 1983 monograph, ''Evolution of Sex Determining Mechanisms''.
In the early 1990s, he ...
, professor of molecular biology
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James Bull (cricketer) (born 1976), English cricketer
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James G. Bull (1838–1927), mayor of Columbus, Ohio
{{hndis, Bull, James