Sir John Kenneth McAlpine KCMG (21 July 1906 – 11 January 1984) was a New Zealand politician of the National Party.
After school, he worked at his father's high-country station at Craigieburn, New Zealand in the Southern Alps east of Arthur's Pass.
He became the manager of that station in 1929 and later lived at Spye, a locality in North Canterbury near Omihi, where his father had farmed.
[2] McAlpine Sr was chairman of the Lyttelton Harbour Board when he died in July 1937.
[4] McAlpine Jr was one of two government-appointees to fill those vacancies[5] and he attended his first meeting on 1 November 1937.