| Honorific Prefix: | Sir |
| Dennis Young | |
| Order: | Acting |
| Office: | Governor-General of Papua New Guinea |
| Term Start: | October 4, 1991 |
| Term End: | November 18, 1991 |
| Primeminister: | Sir Rabbie Namaliu |
| Predecessor: | Sir Vincent Eri |
| Successor: | Sir Wiwa Korowi |
| Birth Place: | England, United Kingdom |
| Death Date: | March 2008 (aged 71–72) |
| Death Place: | Milne Bay, Papua New Guinea |
Sir Dennis Young (1936 – March 2008) was the acting governor-general of Papua New Guinea in 1991. He was Speaker of the Assembly when Sir Serei Eri resigned his position as governor-general on October 1, 1991. Young served as acting governor-general until the selection of Sir Wiwa Korowi on November 18, 1991.[1]
Young was born in England in 1936.[2] He served as the Speaker of the National Parliament of Papua New Guinea from August 1982 to October 1982 and from November 1987 to July 1992.[3]
He was knighted in the 1999 New Year Honours for his public service. Young died from a heart attack in Milne Bay in March 2008.[4]