Jack Sinclair (1935–2006) was an Australian rugby league player.
Sinclair competed in first-grade for Balmain from 1957 to 1960, initially as a centre, before getting later games as both a second-rower and lock. He toured New Zealand with Australia in 1961 and was their lock in the 1st Test, which he played through with a fractured wrist. From 1961 to 1964, Sinclair played for Manly Warringah.
In 1965, Sinclair joined Lithgow as captain-coach.
References
External links Jack Sinclair at Rugby League Project