William Jephson may refer to:Sir William Jephson, MP for Hampshire William Jephson, MP for Stockbridge and Cork William Jephson, MP for East Grinstead and Wycombe William Jephson, MP for Mallow William Jephson, MP for Mallow William Jephson, MP for Mallow William Jephson (priest), dean of Lismore William Jephson (cricketer) (1873–1956), English cricketer