John R. Hornaman (born February 13, 1947) is a former Democratic member of the Pennsylvania House of Representatives, representing the 3rd District from 2007 through 2013.
Hornaman attended McDowell High School and earned a degree in economics from Gannon University Prior to elective he worked as an agent for New York Life from 1972 through 1976. He also owned a painting contracting business, Creative Wall Finishes, for 30 years. He served as a citizen advisor on the Act 101 Solid Waste Committee of Erie County from 2005 to 2006. Hornaman has also been a strong advocate for Lake Erie Wind Power.