John "Jock"[1] Skinner Stewart (23 April 1902 – 5 February 1973) was a New Zealand politician of the Labour Party.

[4] During World War II he joined the military and was given a staff job as his medical grading prevented him from going abroad.

[4] In 1935 he was elected to the Auckland City Council on a Labour Party ticket where he was chairman of the Library Committee.

Whilst in attendance Stewart seconded Auckland East MP Bill Schramm's successful motion to expel John A. Lee from the party.

[11] Later that year he stood for the Labour nomination at the Auckland West by-election following the death of Prime Minister Michael Joseph Savage, but lost to Peter Carr.

[3] Stewart was selected as the official Labour candidate for Remuera in the scheduled 1941 general election.