Haʻapai 12 is an electoral constituency for the Legislative Assembly in the Kingdom of Tonga.
It was established for the November 2010 general election, when the multi-seat regional constituencies for People's Representatives were replaced by single-seat constituencies, electing one representative via the first past the post electoral system.
Located in the Haʻapai island group, it encompasses the villages of Pangai, Hihifo, Ha‘ato‘u, Navea, Holopeka, Koulo, ‘Uiha, Felemea, and Lofanga.
)[1] Its first ever representative was Moʻale Finau, a first time MP, of the Democratic Party of the Friendly Islands.
Finau regained the seat at the 2022 Ha’apai 12 by-election following Hingano's death.