Matthew Rua (born 20 July 1977 in New Zealand) is a former professional rugby league footballer of the 1990s and 2000s. A New Zealand international representative forward, he played in the National Rugby League for the Melbourne Storm, winning the 1999 NRL Premiership with them.
Rua was a Manly-Warringah Sea Eagles junior in 1996 and played for the Junior Kiwis. Rua signed for the Melbourne Storm in 1998 and played for the Norths Devils in the Queensland Cup. In 1999 he was named the Melbourne club's rookie of the year, playing from the interchange bench in the Storm's 1999 NRL Grand Final victory.
Rua represented New Zealand eleven times between 1999 and 2001, including the 2000 World Cup. Rua had played 100 games for the club before being released at the end of the 2002 NRL season. He signed with the Canberra Raiders for the 2003 season, but walked out of his contract before the season started for personal reasons. In 2006 he played for the Waitakere Rangers in the Bartercard Cup before being signed by the Central Comets in the Queensland Cup. This was enough to get him signed by the Melbourne Storm in 2007. However he only played one first grade game that season, his first since 2002, in Melbourne's round 13 win over the New Zealand Warriors at Mount Smart Stadium in Auckland. He retired at the end of the year.
Rua is of Cook Islands heritage and has been involved with the Cook Islands national team as a coach.