Robert John McIntosh (September 16, 1922 – March 22, 2008) was an attorney, pilot, and politician from the U.S. state of Michigan.

He served as assistant prosecuting attorney of Saint Clair County from 1949 to 1951 and as postmaster at Port Huron from October 1, 1953, to February 4, 1955.

McIntosh was a member of the U.S. House of Representatives' Committee on Un-American Activities (HUAC).

In 1963, McIntosh served as chairman of the Michigan State Public Service Commission.

He resumed the practice of law and was a resident of Port Huron, Michigan, and Vero Beach, Florida.