David Niumataiwalu, better known as David Niu (born 3 January 1966), is an Australian-American dual-code international rugby league and rugby union administrator, coach and former player. Regarded as one of the founders of rugby league in the United States, he established the American National Rugby League (AMNRL), the United States' first domestic rugby league competition and formerly the national governing body for the sport. He later served as president of AFL Global, an organization promoting arena football.