Boyd Killingworth (born 6 April 1992) is an Australian professional rugby union player.
Born in Collaroy, NSW and playing for Warringah Rats at a club level, he debuted for Australia in December 2015.
Boyd played every game for the North Harbour Rays in the 2015 National Rugby Championship.
In Rugby Sevens, the Sydneysider also represented New South Wales in the National Sevens Championship in March 2015, helping his side win the title at the Sydney Academy of Sport in Narrabeen.
Representative Honours include NSW 7s (2015), NRC North Harbour Rays (2014–15), National Academy (2011-2013), Waratahs A (2011) and the Australian Schoolboys (2010).