Jack Russell Spring (March 11, 1933 – August 2, 2015) was an American Major League Baseball relief pitcher. The 6 ft 1 in (1.85 m), 175 lb (79 kg) left-hander played for the Philadelphia Phillies (1955), Boston Red Sox (1957), Washington Senators (1958), Los Angeles Angels (1961–64), Chicago Cubs (1964), St. Louis Cardinals (1964), and Cleveland Indians (1965). Spring attended Lewis and Clark High School then both Gonzaga University in 1951 and Washington State University in 1952. At these schools, he played college baseball for the Bulldogs and Cougars, respectively.