William Mullins

William Mullins may refer to:
 * William Mullins (Mayflower passenger)
 * William Mullins, 2nd Baron Ventry, Anglo-Irish politician and peer
 * William D. Mullins, American politician and baseball player
 * William W. Mullins, American physicist and materials scientist
 * Willie Mullins, Irish racehorse trainer and jockey
 * Bill Mullins, Australian rugby league player
 * Bill Mullins (equestrian), Irish equestrian