The Ministry of Fisheries (Māori: Te Tautiaki i nga tini a Tangaroa), also known by its acronym MFish, was a state sector organisation of New Zealand whose role is ensuring the sustainable utilisation of fisheries.

The subsequent Labour-led government has announced it would break up MPI and has re-established the portfolio of Minister of Fisheries.

However, MPI was not disestablished; instead, it was restructured with Fisheries New Zealand established as a new business group within the larger agency.

[2] The Ministry was primarily responsible for fisheries management within New Zealand's 200-nautical-mile (400 km) Exclusive Economic Zone (EEZ).

[3] MFish also undertook fisheries research to provide information needed to determine how many fish and other marine organisms (of various species) could be safely taken while ensuring the sustainability of the resource.