Tafai Ioasa (born 7 October 1980 in Hastings) is a New Zealand rugby union player who has played for the New Zealand national rugby sevens team. He played rugby in Japan for Fukuoka Sanix Blues and is currently head coach of the Whanganui Collegiate School First XV since 2023. Formerly a head coach of the Hastings Boys High School First XV, The team were crowned national champions in 2019 and 2015.