William Griffith

William Griffith may refer to:

Politicians

 * William Griffith (born 1480) (1480–1545), Weslsh politician
 * William Griffith (MP fl.1586), MP for Caernarvon Boroughs (UK Parliament constituency)
 * William Griffith (MP fl.1597), MP for Caernarvonshire (UK Parliament constituency)
 * William Griffith (1620–1688), Welsh Member of Parliament for Caernarvon (UK Parliament constituency)
 * William Griffith (1686–1715), Welsh Member of Parliament for Caernarvon and Caernarvonshire
 * William Griffith (US politician), see United States House of Representatives elections, 2006

Sports

 * William "Billy" Griffith (1880–1949), Australian rules footballer
 * William Griffith (canoeist) (born 1947), Canadian canoeist
 * William Griffith (cricketer) (1871-1948), South African cricketer
 * Stewart Cathie "Billy" Griffith (1914–1993), English cricketer

Others

 * William Griffith (New Jersey attorney) (1766–1826), briefly served as a United States federal judge
 * William Griffith (astronomer) (born 1956), Californian amateur astronomer
 * William Griffith (botanist) (1810–1845)
 * William Henry Jackson "Bill" Griffith (born 1944), American cartoonist
 * William Griffith (murderer) (died 1863), a participant in the Marais des Cygnes massacre, for which he was later executed
 * William Pettit Griffith (1815–1884), English architect and antiquarian