Sir John Armitage Stainton, KCB, KBE, QC (29 February 1888 – 6 September 1957) was a British lawyer and parliamentary draftsman.
After schooling at Winchester College, he went up to Christ Church, Oxford, to read classics.
He served in the First World War, being commissioned into the 4th Battalion of the Argyll and Sutherland Highlanders in 1915.
While at the OPC, he drafted the Finance Bills and became an expert in income tax law; he was also responsible for the National Insurance Act 1946, a highly complex piece of legislation the drafting of which The Times described as Stainton's "hardest job".
Janet Bertha, daughter of John Dewar, 1st Baron Forteviot.