William Havili

William Havili (born 9 September 1998) is a professional rugby union player who plays as a fly-half for Super Rugby club Moana Pasifika. Born in New Zealand, he represents Tonga at international level after qualifying on ancestry grounds.

Club career
Havili made his debut for in Round 6 of the 2018 Mitre 10 Cup against  at Trafalgar Park, coming off the bench in a 21-19 win for the Mako. He was named in the Tasman Mako squad as a development player for the 2021 Bunnings NPC. He made his return to the side in Round 4 of the competition, coming off the bench against at Trafalgar Park. Havili signed with Moana Pasifika for the 2022 Super Rugby Pacific season. Tasman went on to make the final of the competition that year before losing 23–20 to. He made his Super Rugby debut for Moana Pasifika against the in Round 3 of the 2022 season.

Having become a regular starter for Moana Pasifika throughout 2022, Havili was called up to play test rugby for Tonga ahead of their World Cup qualifiers.

Personal life
Havili was eligible for two nations, New Zealand through birth and Tonga through ancestry. He is also the brother of All Blacks player David Havili.