Duncan Paia'aua (born 20 January 1995) is a professional rugby union player who plays as a centre for Top 14 club Toulon.

[1] He played rugby at high school in Rockhampton and was twice selected for the Queensland Under 16 team.

[2] He subsequently played 1 game for Queensland Country in the first ever National Rugby Championship,[3][4] leading them to victory in 2018 and runner-up in 2019 as captain.

On 28 October 2017, Paia'aua started for the Wallabies against the Barbarians at Allianz Stadium, Sydney.

He represented Australia at the Wallabies v Barbarians game in 2017 where he scored 16 of the 31[6] points although it was not officially designated a test match.