William Murray Birtwistle (born 4 July 1939) is a former New Zealand rugby union player.
A wing three-quarter, Birtwistle represented Auckland, Canterbury and Waikato at a provincial level, and was a member of the New Zealand national side, the All Blacks, from 1965 to 1967.
He played 12 matches for the All Blacks including seven internationals.
This biographical article relating to New Zealand rugby union is a stub.
You can help Wikipedia by expanding it.