William, Will, Bill or Billy Dean may refer to:

Arts and entertainment

• William Dean Howells (1837–1920), American novelist and playwright
• Bill Dean (1921–2000), British actor
• Billy Dean (born 1962), American country music singer
  • Billy Dean (album), his 1991 album

Sports

• William Dean (Hampshire cricketer) (c. 1882–?), Australian cricketer
• William Henry Dean (1887–1949), English water polo player
• Dixie Dean (William Dean, 1907–1980), English footballer
• William Dean (Somerset cricketer) (1926–1994), English cricketer
• Bill Dean (baseball) (fl. 1940), American baseball player
• Will Dean (rower) (born 1987), Canadian rower
• Will Dean (footballer) (born 2000), English footballer

Others

• William Dean (priest) (died 1588), English priest and martyr
• William Dean (engineer) (1840–1905), British railway engineer
• William Reginald Dean (1896–1973), British applied mathematician
• William F. Dean (1899–1981), United States Army general
• William D. Dean (born 1940), American politician and television producer
• Billy Dean Anderson (1934–1979), American criminal
• Will Dean (entrepreneur) (born 1980), English business founder
• Bill Dean (politician), American legislator from Ohio

Other uses

• William Dean Chocolates, American confectioner

See also

• William the Dean, 13th century Scottish bishop
• William Deane (born 1931), Governor-General of Australia from 1996 to 2001
• Billy Deans (disambiguation)