William Leggett

William Leggett may refer to:

• William Leggett (writer) (1801–1839), American poet, fiction writer, and journalist
• William C. Leggett (born 1939), Canadian fish ecologist and oceanographer, former Principal of Queen's University
• William Henry Leggett (1816–1882), American botanist and journalist
• William J. Leggett (1848–1925), college football player, team captain of Rutgers in the first ever game