William Holder (1616–1698) was an English clergyman.
William Holder may also refer to: William Holder (rugby) (fl. 1907–1941), known as Billy, English rugby union and rugby league footballer William Dunbar Holder (1824–1900), Confederate politician Will Holder (designer) (born 1969), British designer and artist Will Holder (American football) (born 1975), American football player Will Holder (rugby union) (born 1991), American rugby sevens player
See also Bill Houlder (born 1967), Canadian ice hockey player