Sir John Warcup "Kappa" Cornforth, AC, CBE, FRS, FAA (7 September 1917 – 14 December 2013), was an Australian–British chemist who won the Nobel Prize in Chemistry in 1975 for his work on the stereochemistry of enzyme-catalysed reactions. He was the only Australian to win the Nobel Prize in Chemistry.
He was named the Australian of the Year in 1975,jointly with Maj. Gen. Alan Stretton. He was knighted in 1977