William Gregory

William Gregory may refer to:

• William Gregory (fl.1406), MP for Guildford
• William Gregory (Lord Mayor), (c.1400–1467), Lord Mayor of London
• William Gregory (died 1616), MP for Nottingham (UK Parliament constituency)
• William Gregory (mayor) (1896–1970), mayor of Lower Hutt, New Zealand
• William Gregory (1625–1696), English MP for Hereford and Weobley, Speaker of the House of Commons
• William Henry Gregory (1817–1892), Anglo-Irish politician, MP for Dublin and County Galway
• William S. Gregory (1825–1887), mayor of Kansas City
• William Gregory (Rhode Island) (1849–1901), American governor
• William Voris Gregory (1877–1936), US Congressman from Kentucky

• Robert Gregory (cricketer) (1881–1918), born William Robert Gregory, Irish cricketer and artist
• Bill Gregory (born 1949), former American football defensive lineman

• William Gregory (Carmelite) (fl. 1520), Scottish Carmelite
• William G. Gregory (born 1957), NASA astronaut
• William Gregory (chemist) (1803–1858), Scottish chemist
• William King Gregory (1876–1970), American zoologist
• Will Gregory (born 1959), British musician with Goldfrapp