James Russell Watt (born 29 December 1935) is a former New Zealand rugby union player.
A wing three-quarter, Watt represented Otago, Southland, and Wellington at a provincial level, and was a member of the New Zealand national side, the All Blacks, between 1957 and 1962.
He played 42 matches for the All Blacks including nine internationals, scoring 114 points in all.On 30 April 1960 Watt became engaged to Betty Thomer.