- Source: John Slocum (disambiguation)
John Slocum may refer to:
Colonel John S. Slocum (1824–1861), namesake of Fort Slocum (Washington, D.C.)
John Slocum (1838–1897), the founder of the Indian Shaker Church
John W. Slocum (1867–1938), American lawyer and politician
John J. Slocum (1914–1997), diplomat and bibliographer
John L. Slocum (1920–1998), inventor of the Slocum stone