The 2008 Air New Zealand Cup was a provincial rugby union competition involving 14 teams from New Zealand. Matches started on Thursday 31 July 2008, and continued until the final on 25 October 2008. This season was the third of the expanded competition, which succeeded the First Division of the National Provincial Championship. It started with a 10-week round robin in which every team missed out on playing 3 teams in the competition. This was followed by a knockout playoff involving 8 teams, made up of quarterfinals, semifinals and the final.