John Walter, Jr. was a Canadian politician and businessman. The eldest of four children, he was born April 10, 1892 in Milwaukee, Wisconsin to John and Caroline (nee Drier). He attended elementary school in Milwaukee and Detroit, Michigan before attending high school at the Crane Technical High School in Chicago, Illinois. He immigrated to Canada with his family in 1912 and worked alongside his father and brother as a manufacturer with the family company, John Walter & Sons. He married Olga Klehn, of Kitchener, on August 9, 1922. They lived for a time at 32 Fairview Avenue in Kitchener, Ontario.

In the 1930s Walter served first as Vice-President and later President of the Co-operative Commonwealth Federation (C.C.F) party's Kitchener branch. He ran against and lost in the 1935 federal election to William Daum Euler. In addition to his affiliation with the C.C.F., Walter served as a Kitchener public school board trustee for nine years during the 1920s and 30s.

Walter died on April 17, 1978.