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) (born 1959), former first baseman
 * Greg Walker (footballer) (born 1967), former Australian rules footballer
 * Greg Walker (rower) (born 1964), American Olympic rower
 * Gregory T.S. Walker (born 1961), American composer, violinist, and guitarist
 * Gregory Walker (music), harmonic formula in the Renaissance period
 * Greg Walker (politician) (born 1963), Republican politician in Indiana
 * Greg T. Walker (born 1951), American bassist
 * Gregory Walker, a character in "A Piano in the House"