William Light (1786–1839) was the first Surveyor-General of the Colony of South Australia.
William Light may also refer to:
Bill Light (William C. Light, born 1949), American farmer and politician Billy Light (William Henry Light, 1913–1993), English footballer William Light (cricketer) (1878–1930), English cricketer William Sidney "Cap" Light (c. 1863 - 1893), Texas lawman
See also Light (surname)