William "Bill" McMahon is a former Hong Kong international lawn bowler.

[1] McMahon represented Hong Kong at two Commonwealth Games; in the fours event at the 1990 Commonwealth Games and in the pairs event at the 1994 Commonwealth Games.

[2][3] In 1987 he won a triples silver medal at the Asia Pacific Bowls Championships in Lae, Papua New Guinea.

[4][5] His wife Rosemary McMahon[3] was also an international lawn bowler and his son is Mark McMahon.

This biographical article relating to lawn or indoor bowls is a stub.