Dennis Williams

Dennis Williams may refer to:


 * Dennis Williams (basketball) (born 1965), American basketball player
 * Dennis Williams (cricketer) (1936–2013) English cricketer and British Army officer
 * Dennis Williams (ice hockey) (born 1979), Canadian ice hockey coach
 * Dennis Williams (unionist) (born 1953), American labor union leader
 * Dennis A. Williams (born 1952), former New Zealand rugby league international
 * Dennis E. Williams (born 1959), Delaware state representative from the 10th district
 * Dennis P. Williams (born 1953), 55th Mayor of Wilmington