John Herman Stephenson (born April 13, 1941 in South Portsmouth, Greenup County, Kentucky) is a retired American professional baseball player who was a catcher in the Major Leagues from 1964 to 1973. He played for the San Francisco Giants, Chicago Cubs, New York Mets, and California Angels. On June 21, 1964, while with the Mets, he struck out for the final out of Jim Bunning's perfect game. John holds a degree from William Carey College in Hattiesburg, Mississippi. He has gone on to coach extensively in the major and minor leagues as well as college.