Te Matatini Kapa Haka competition, the biggest event on the Maori calendar, has been postponed until February 2023.
The announcement comes after organisers received specialist advice from Māori health experts about Covid-19.
Te Matatini chief executive Carl Ross said the move would disappoint many whānau, but protecting everyone from Covid-19 was the number one priority.
All large scale events will require vaccination certificates for people to attend.
The Kapa Haka festival will remain at Eden Park in Tāmaki Makaurau and all qualifying Kapa Haka groups and judges will be the same.