William Morgan may refer to:
Arts and entertainment
William De Morgan (1839–1917), pottery and tile designer in Britain
William Morgan (director) (1899–1964), English film director and editor
William Michael Morgan (born 1993), American country music singer
William Evan Charles Morgan, artist, etcher and engraver
Military
William H. Morgan (1831–?), American general
William Duthie Morgan (1891–1977), general in the British Army after whom the Morgan Line was named William J. Morgan (historian) (1917–2003), Senior Historian at the U.S. Naval Historical Center and editor of Naval Documents of the American Revolution William Alexander Morgan (1928–1961), American who fought in the Cuban Revolution William B. Morgan, American naval architect William D. Morgan (1947–1969), Medal of Honor recipient, U.S. Marine killed in action in Vietnam
Politics
United Kingdom
William Morgan (died 1602), MP for Haslemere
William Morgan (died 1569), MP for Monmouthshire
William Morgan (died 1582), MP for Monmouthshire
William Morgan (died 1583) (1542–1583), MP for Monmouth Boroughs
William Morgan (of Tredegar) (1560–1653), Welsh politician
William Morgan (of Rhymny), Welsh politician
William Morgan (of Dderw) (died 1649), Welsh lawyer and politician
William Morgan (of Machen and Tredegar) (c. 1640–1680), Member of Parliament for Monmouthshire 1659–1680 Sir William Morgan (of Tredegar, elder) (1700–1731), Member of Parliament for Brecon, 1722–1723, and Monmouthshire, 1722–1731 William Morgan (of Tredegar, younger) (1725–1763), Member of Parliament for Monmouthshire, 1747–1763 William Pritchard Morgan (1844–1924), British Member of Parliament for Merthyr Tydfil, 1888–1900 William James Morgan (1914–1999), Irish politician
United States
William S. Morgan (1801–1878), U.S. Representative from Virginia
William Duane Morgan (1817–1887), American newspaper editor and politician
William Augustine Morgan (1831-1899), Virginia planter, Confederate cavalry officer, early West Virginia politician William Albert Morgan (1841–1917), Irish-American newspaper publisher and politician William Yoast Morgan (1866–1932), lieutenant governor of Kansas William McKendree Morgan (1869–1942), Idaho lawyer and politician William M. Morgan (congressman) (1870–1935), U.S. Representative from Ohio Will Morgan (born 1966), member of the Minnesota House of Representatives
Other politicians
William Morgan (South Australian politician) (1828–1883), Premier of South Australia, 1878–1881 William Morgan (New South Wales politician) (1842–1907), member of the New South Wales Legislative Assembly, 1894–1901 William Morgan (Canadian politician) (1848–after 1890), politician in Ontario, Canada William Morgan (New Zealand politician) (1851–1918), member of the New Zealand Legislative Council
Science and medicine
William Morgan (cartographer) (died 1690), English cartographer
William Morgan (actuary) (1750–1833), Welsh scientist and actuary who won the Copley Medal in 1789 William Fellowes Morgan Sr. (1861–1943), president of the National Association for the Prevention of Blindness William Wilson Morgan (1906–1994), American astronomer W. Jason Morgan (1935–2023), American geophysicist G. William Morgan (died 1984), American health physicist
Sports
William Morgan (cricketer, born 1862) (1862–1914), Welsh cricketer
William Morgan (cricketer, born 1864) (1864–1934), English cricketer
William G. Morgan (1870–1942), American inventor of the game of volleyball
William Llewellyn Morgan (1884–1960), Welsh international rugby union player
William A. Morgan (footballer) (born 1914, date of death unknown), English footballer who played as goalkeeper for Coventry City F.C. William Morgan (rugby league), rugby league footballer of the 1930s for Wales, and Wigan Sack Morgan (William Lee Morgan), American baseball player William James Morgan aka Jimmy Morgan (1922–1975), English footballer and Royal Marines Commando Willie Morgan (born 1944), Scottish footballer William Morgan (judoka) (born 1975), Canadian Paralympic judo competitor