John Henry Summerskill (March 26, 1925 – June 14, 1990) was a Canadian educator who served as the seventh president of San Francisco State University in the 1960s. Prior to this he was vice president for student affairs at Cornell University. In the 1970s he was named president of Athens College in Greece. He later moved to New Jersey, where he established a vineyard and became president of the New Jersey Wine Growers Association.