John Comstock Gaveney (June 30, 1863 – April 13, 1947) was an American lawyer, Republican politician, and judge.
He then practiced law in Arcadia, Wisconsin, managed the family's lumberyard and flour mill, and helped organized the Western Wisconsin Telephone Company.
Gaveney died of a heart attack sitting in a chair while smoking a cigar at his home in Whitehall, Wisconsin.
James Gaveney went to California during the Gold Rush and there encountered fellow Wisconsinite Noah D. Comstock.
The two men drew guns and nearly killed each other over competing claims on a tract of mining land, but reason prevailed and they decided to work the claim in partnership.