William Wilcox may refer to:
William Cullen Wilcox (1850–1928), American missionary to South Africa William Wilcox (footballer) (active 1910s–1925), English footballer William H. Wilcox, American soldier and Medal of Honor recipient William Jenkins Wilcox Jr.(1923–2013), American chemist and historian W. Bradford Wilcox (born 1970), professor of sociology at the University of Virginia
See also William Willcox (disambiguation) William Willcocks (1852–1932), engineer William Wilcocks, MP for New Romney