Charles Adam Karch (March 17, 1875 – November 6, 1932) was a U.S. Representative from Illinois. Born on a farm in Englemann Township, St. Clair County, Illinois, the son of German immigrants. Karch attended the public schools. He graduated from Northern Illinois Normal University (now the Illinois State University), at Normal, Illinois, in 1894. He taught school from 1895 to 1900.