John Stanfield (February 1, 1868 – November 11, 1934) was a Canadian industrialist and politician. He was born in Truro, Nova Scotia, and became the second generation leader of Stanfield's Limited, a wool‑manufacturing firm founded by his father, Charles E. Stanfield. Under his management the company expanded its production of woolen garments and became a major Canadian employer.
In politics, Stanfield was elected as a Member of Parliament for the riding of Colchester, Nova Scotia, representing the Conservative Party. He served in the House of Commons from 1907 until his appointment to the Senate in 1917. As a senator, he represented Nova Scotia until his death in 1934. In recognition of his contributions to industry and public service, he was created a Knight Bachelor in the 1917 New Year Honours.
Stanfield’s legacy includes the continued prominence of the Stanfield's brand in the Canadian textile market and his role in early 20th‑century Canadian political affairs.