Paul Williams (born 11 April 1985) is a professional rugby union referee from New Zealand who currently referees in the Super Rugby competition and in international test matches. Williams started refereeing in 2011 while still playing at halfback at club level and was appointed to the New Zealand High Performance referee squad in 2014. He quickly rose up the domestic ranks of refereeing, ultimately becoming a full-time referee on the Super Rugby panel in 2016, the first ever from Taranaki. Williams refereed the 2016 World Rugby U20 Championship final between England and Ireland.