The Waikato Rugby Union (WRU) is the official governing body of rugby union in the region of Waikato in the North Island of New Zealand. Their senior representative team are the current holders of the Air New Zealand Cup, having won the inaugural competition in 2006. Waikato Rugby Union was founded in 1921. The senior representative team plays in the Air New Zealand Cup, replacing the premier division of the National Provincial Championship. The team play their home fixtures at the Waikato Stadium in Hamilton. The union's colours are red, yellow and black.