Jack Callihan Parnell is a former United States Deputy Secretary of Agriculture. He served during the George H.W. Bush administration from 1989 until 1991. He had been Secretary of the California Department of Food and Agriculture from 1987 to 1989, as Director of the California Department of Fish and Game from 1984 to 1987, and as Deputy Secretary of the California Department of Food and Agriculture from 1983 to 1984. He was elected to the Board of Directors of the Neogen Corporation in October 1993, and as Chairman of the Board in October 2001. He is also a government relations consultant at Kahn Soares & Conway, LLP. Before working for the Californian government, Jack Parnell was the owner and publisher of California Cattleman Magazine and the founder and chairman of the Auburn Bank of Commerce. He built and operated the Headquarters House Restaurant, the Headquarters House Country Meat Shop, the Angus Hills Golf Course, and Parnell Ranch. He served on the U.S. Trade Representative's Intergovernmental Policy Advisory Committee, on the National American Angus Association Board, on the California Production Credit Association.