John Barry Stanchfield (March 13, 1855 – June 25, 1921) was an American lawyer and politician from New York.

He commenced the practice of law in Elmira in partnership with David B. Hill, later Governor of New York (1885–1891).

Afterwards he was a partner in the Elmira law firm of Reynolds, Stanchfield & Collin (named Sayles & Evans since 1945).

[2] Shortly after his removal to New York City, he appeared for Richard Albert Canfield and secured the dismissal of an indictment, earning a fee of $30,000.

[3] In 1915, he secured the release of Harry Kendall Thaw from the Matteawan State Hospital for the Criminally Insane.