John Eric Hillman (born April 27, 1966 in Gary, Indiana) is a former Major League Baseball and Nippon Professional Baseball pitcher.
He pitched his entire 3-year MLB career with the New York Mets (1992–1994).
After his MLB career, he pitched in NPB from 1995-1998 for the Chiba Lotte Marines and the Yomiuri Giants.
Hillman was tied with fellow pitcher Randy Johnson for the tallest player in league history at 6 ft 10 in (2.08 m), before later being passed by 6 ft 11 in (2.11 m) Jon Rauch.
Hillman worked as an analyst for FSN Rocky Mountain's coverage of the Colorado Rockies between 2005-2008.