Jack Duane Ellena (October 27, 1931 in Susanville, California – March 23, 2012 in Palm Desert, California) was an American football player. Ellena played offensive tackle for coach Red Sanders at UCLA from 1952 to 1954. He was a member of the Bruins team that won the 1954 Rose Bowl and was named that year's FWAA & UPI national champions. That same year, Ellena was named to the College Football All-America Team and won the UPI Lineman of the Year.