Lieutenant General Sir John Peter Barry Condliffe Watts, KBE, CB, MC (27 August 1930 – 10 December 2003) was a British Army officer who became Chief of Defence Staff for the Sultan of Oman's Armed Forces.

Educated at Westminster School, Phillips Academy in Andover, Massachusetts, and the Royal Military Academy Sandhurst, Watts was commissioned into the Royal Ulster Rifles in 1951.^[1] He served with 22 Special Air Service Regiment and, as commander of B Squadron, took part in counter-terrorism operations in Borneo in 1958 and then, as commander of D Squadron, in the regiment's successful assault on Jebel Akhdar in Oman in January 1959.^[1] The dissidents there were largely captured or dispersed and for his achievement in scaling the mountain he was awarded the Military Cross.^[1]

Watts was appointed commanding officer of 22 Special Air Service Regiment in 1970, an instructor at the Staff College, Camberley, in 1972 and Director SAS in 1975.^[2] He went on to be commander of the Sultan of Oman's Land Forces in 1979 and Chief of Defence Staff for the Sultan of Oman's Armed Forces in 1984, before retiring in 1987.^[1]

In retirement Watts read history and lived in a village in Wiltshire.^[3]

Watts was married to Mary Flynn; they had four sons and three daughters before the marriage was dissolved in 1986. He subsequently married Diana Walker.^[1]