Joseph Jackson Hadfield (August 24, 1844 - May 18, 1894) was an American businessman and politician.
Born in Waukesha, Wisconsin, Hadfield was a wool dealer and was in the real estate business. From 1873 to 1880, Hadfield lived in Ottumwa, Iowa. In 1882, Hadfield was elected trustee of the village of Waukesha and then became president of the village. In 1887, Hadfield served in the Wisconsin State Assembly and was a Democrat. Hadfield died of cancer in Waukesha, Wisconsin.[1] [2]