Stephen Robert "Steve" Furness (December 5, 1950 – February 9, 2000) was an American defensive tackle for the Pittsburgh Steelers and Detroit Lions of the National Football League, and a member of the Steelers' famed Steel Curtain defense. He earned four Super Bowl rings as a professional player and ranks 12th on the Steelers' all-time sack list. He was of English and Armenian descent. Furness converted to Judaism. Furness died unexpectedly of a heart attack on February 9, 2000, survived by two sons.