William Hart may refer to:

In arts and entertainment:

• William Hart (actor) (1600-1639), English Jacobean actor, Shakespeare's nephew
• William Hart (painter) (1823-1894), Scottish-American painter
• William S. Hart (1864-1946), American silent film actor, screenwriter, director, and producer
• William Hart (singer) (born 1945), singer with The Delfonics
• Will Cullen Hart, American musician and artist
• Billy Hart, American jazz drummer

In government:

• William Hart of Livelands, Scottist jurist and 16th century Lord Advocate
• William H. H. Hart (1848-1903), California attorney general

In sports:

• Bill Hart (pitcher) (1865-1936), American professional baseball pitcher
• Billy Hart (baseball) (1866-1944), American professional baseball player, see St. Louis Cardinals all-time roster
• Bill Hart (infielder) (1913-1968), American professional baseball third-baseman with the Brooklyn Dodgers

In other fields:

• William Hart (priest) (1558-1583), Catholic martyr
• William Hart (Medal of Honor recipient) (1866-?), American sailor, see List of Medal of Honor recipients for the Spanish-American War
• William Hart (natural gas), drilled first natural gas well in the US, see Fredonia Gas Light Company

This disambiguation page lists articles associated with the same personal name. If an article link led you here, you may wish to change the link to point directly to the intended article.