William Forsythe

William Forsythe may refer to:


 * William Forsythe (actor) (born 1955), American actor
 * William Forsythe (choreographer) (born 1949), American dancer and choreographer
 * William Forsythe (canoeist), Australian slalom canoeist; see 2008 Canoe Slalom World Cup
 * William E. Forsythe (1881–1969), president of the Optical Society of America