Guy Edgar Campbell (October 9, 1871 – February 17, 1940) was a Democratic and Republican member of the U.S. House of Representatives from Pennsylvania.

His brother Otto C Campbell, 10 years his junior, served as Street Commissioner of Crafton Borough.

Campbell was employed as a clerk in the offices of the Baltimore and Ohio Railroad in Pittsburgh, until June 1896, when he resigned.

He served as the Chairman of the United States House Committee on Expenditures in the Department of Labor during the Sixty-eighth Congress.

He died at Willoughby, Ohio, and is interred in Union Dale Cemetery in Pittsburgh.