The 2020 Mitre 10 Cup season was the fifteenth season of New Zealand's provincial rugby union competition since it turned professional in 2006. The regular season began on September 11, when North Harbour hosted Canterbury. It involved the top fourteen rugby unions of New Zealand. For sponsorship reasons, the competition was known as the Mitre 10 Cup and it was the fifth season under the lead sponsor. The winner of the Championship, Hawke's Bay was promoted to the Premiership, the seventh placed Premiership team, North Harbour was relegated to the Championship.