Gregory Walker

Gregory or Greg Walker may refer to:

Greg Walker (academic), professor of rhetoric and English literature at the University of Edinburgh
Greg Walker (baseball), former first baseman
Greg Walker (footballer), former Australian rules footballer
Greg Walker (rower), American Olympic rower
Gregory T.S. Walker, American composer, violinist, and guitarist
Gregory Walker (music), harmonic formula in the Renaissance period
Greg Walker (politician), Republican politician in Indiana
Greg T. Walker, American bassist
Gregory Walker, a character in "A Piano in the House"