The 2021 Bunnings NPC season was the sixteenth season of New Zealand's provincial rugby union competition since it turned professional in 2006. The regular season began on August 6, when Manawatu hosted Counties Manukau. It involved the top fourteen rugby unions of New Zealand. For sponsorship reasons, the competition was known as the Bunnings NPC and it was the first season under the lead sponsor and to carry the NPC moniker since 2005. The winner of the Championship, Taranaki wasn't promoted to the Premiership due to a format restructure earlier in the season. The seventh placed Premiership team, Auckland wasn't relegated to the Championship after not being able to compete after the resurgence of COVID-19 in the Auckland region.