These New Zealand Rugby union teams are now defunct:
Ashburton County (1927–1952) — changed to Mid Canterbury Bush (1890-1971) — merged into Wairarapa-Bush Central Vikings (1997–1998) — short-term merger of Hawke's Bay and Manawatu Golden Bay-Motueka (1920–1967) — merged into Nelson Bays Rugby Union Manawhenua (1924–1933) — short-term merger of Manawatu and Horowhenua Marlborough (1888–2005) — merged into Tasman Moana Pasifika (2022-2026) — Club disbanded in 2026 due to financial hardship Nelson (1885–1967) — merged into Nelson Bays Rugby Union with Golden Bay-Motuekea Rugby Union Nelson Bays (1968–2005) — merged into Tasman North Auckland (1920–1994) — changed to Northland South Auckland Rugby Union (1909) (1909–1921) — split three ways to Waikato, King Country and Thames Valley South Auckland Rugby Union (1926) (1926–1955) — changed to South Auckland Counties in 1955, then Counties Rugby Football Union until 1995 then changed to Counties Manukau Rugby Football Union