John Hunter Walker (April 27, 1872[1] – August 27, 1955) was a Scottish-born American labor unionist and politician.

He joined the United Mine Workers of America and soon became a full-time organizer for the union, covering West Virginia.

[4] Walker later settled in Danville, Illinois, and in 1905, he was elected to the executive board of the union's District 12.

He was a supporter of the Socialist Party of America, and in 1906 he ran unsuccessfully for the United States House of Representatives.

In 1930, the opposition group formed the Reorganized United Mine Workers of America, with Walker as secretary-treasurer.