Sir John Ross Marshall was a New Zealand politician of the National Party. He entered Parliament in 1946 and was first promoted to Cabinet in 1951. After spending twelve years as the deputy prime minister of New Zealand, he served as the 28th prime minister from February until December 1972.

The New Zealand National Party, shortened to National or the Nats, is a centre-right New Zealand political party that is the current ruling party. It is one of two major parties that dominate contemporary New Zealand politics, alongside its traditional rival, the Labour Party.