John Warwick King (26 December 1856 – 14 January 1927) was a Progressive party member of the House of Commons of Canada.
He was born in Smiths Falls, Canada West and became a farmer and teacher.
For 17 years he was a public school teacher in the province, then became an agriculturalist.
King died on 14 January 1927 of a heart attack at his home in Bluevale, before the end of his term in the 16th Canadian Parliament.
His wife, née Annie Olive Schoales, died in May 1926.