John Haines Ware III (August 29, 1908 – July 29, 1997) was an American politician who served as a Republican member of the U.S. House of Representatives for Pennsylvania's 9th congressional district from 1970 to 1973 and Pennsylvania's 5th congressional district from 1973 to 1975. He also served as a member of the Pennsylvania Senate for the 19th district from 1961 to 1970.