Manawatu-Wanganui

is a local government region of New Zealand. It stretches across the southern half of the North Island and adjoins the Taranaki Region to the west, the Waikato Region to the north, the Hawke's Bay Region to the east, and the Wellington Region to the south. Its extent is defined largely by the catchments of the Whanganui River (the country's longest navigable river) and the Manawatu River.

Chief population centres are Palmerston North and Whanganui (which was formerly the City of Wanganui). Others include Taumarunui, Marton, Feilding, Foxton, Levin, and Dannevirke.

The region is generally within the northern part of the former Wellington Province (1852-1876) but includes the Tararua District in the east, which includes the southern end of the former Hawke's Bay Province (1858-1876).