Heka Nanai (born 15 August 1988) is an Australian former professional rugby league footballer who played in the 2000s and 2010s for Canterbury-Bankstown.

Nanai was a graduate of Westfields Sports High School located in Fairfield West.

Westfields is a sports school that has produced players such as Jarryd Hayne, Liam Fulton, Krisnan Inu, Luke O'Donnell and Mark Minichiello.

Nanai made his debut for Canterbury against the Sydney Roosters in Round 16 of the NRL season on 2 July 2007.

In 2014, Nanai played the majority of the season for the Auburn Warriors in the Ron Massey Cup On 2 October 2007, Nanai was called up to represent the Junior Kangaroos as a replacement for Jarryd Hayne, who was chosen for the Senior Kangaroos side.