John C. Wagner (March 27, 1858 – October 11, 1937) was an American businessman and politician.
He also served as sheriff of Racine County and was a Republican.
Wagner served in the Wisconsin Assembly in 1899 and 1900.
Wagner died in Racine, Wisconsin after a long illness.
This article about a Republican Party member of the Wisconsin State Assembly born in the 1850s is a stub.