Gordon Coates, New Zealand soldier and politician, 21st Prime Minister of New Zealand (b. 1878)
Joseph Gordon Coates (3 February 1878 – 27 May 1943) served as the 21st prime minister of New Zealand from 1925 to 1928. He was the third successive Reform prime minister since 1912.

Coates was a farmer before becoming a Member of Parliament, and he maintained a focus on farming interests throughout his political career. He was elected to Parliament in 1911, when he stood as an independent candidate. After distinguished service during World War I, he was appointed as Minister of Justice and Postmaster-General in the Reform government of William Massey (1919); he served as Minister of Public Works (1920–26) and Native Affairs (1921–28) and became prime minister in 1925 on Massey's death.

Defeated in the elections of 1928, Coates returned to government in 1931 as the key figure in the coalition government of George Forbes. Serving as Minister of Public Works (1931–33) and of Finance (1933–35), he instituted rigorous policies to combat the economic depression of the 1930s. He became a member of Peter Fraser's War Administration from 1940, serving as Minister of Armed Forces and War Co-ordination until his death.