William Marshall
William Marshall, William Marshal or Bill Marshall may refer to:
Politicians, noblemen and military leaders
- William Marshal, 1st Earl of Pembroke (1146–1219), Anglo Norman nobleman and crusader
- William Marshal, 2nd Earl of Pembroke (1190–1231), English nobleman, son of the above
- William Marshal, 1st Baron Marshal, slain at the Battle of Bannockburn 24 June 1314.
- William Marshall (1796–1872), British politician
- William Marshall (Australian politician)
- William Marshall (British Army officer) (1865–1939), British military commander
- William Louis Marshall (1846–1920), scion of the family of Chief Justice John Marshall
- William Rainey Marshall (1825–1896), American politician; Republican governor of Minnesota, 1866–1870
- William Thomas Marshall (1854–1920), English recipient of the Victoria Cross
- Bill Marshall (lawyer), former Solicitor General of Ohio
- Billy Marshall (1672–1792), King of the Gypsies
Arts and entertainment
- William Marshall (actor) (1924–2003), African-American actor best known for the title role in Blacula
- William Marshall (bandleader) (1917–1994), American singer and bandleader
- William Marshall (cinematographer) (1885–1943), American film technician
- William Marshall (illustrator) (fl. 1617–1649), English engraver and illustrator
- William Marshall (potter) (1923–2007), English studio potter
- William Marshall (Scottish composer) (1748–1833), Scottish composer
- William Calder Marshall (1813–1894), Scottish sculptor
Sports
- William Marshall (tennis) (1849–1921), English tennis player
- William Marshall (rugby), Scottish rugby player
- William C. Marshall (1918–2005), Barbadian champion racehorse trainer
- William D. Marshall (1884–?), Australian rules footballer in the VFL
- Doc Marshall (catcher) (William Riddle Marshall, 1875–1959), American baseball player
- Bill Marshall (American football), founder and long-time head coach of the Detroit Heralds of the early National Football League
- Bill Marshall (baseball) (1911–1977), American Major League Baseball player
- Billy Marshall (1936–2007), Northern Irish footballer
- Harry Marshall (born William Harry Marshall, 1905–1959), English footballer
Others
- William Marshall (agricultural writer) (1745–1818), English writer and critic on agricultural and horticultural topics
- William Marshall (translator), 16th century client of Thomas Cromwell, translator of Marsiglio of Padua's Defensor Pacis
- William Leonard Marshall (born 1944), Australian author of Hong Kong-based Yellowthread Street mystery novels
- William Marshall (teacher) (1817–1906), New Zealand teacher and clergyman