William Henry Weir (born 13 February 1990) is an English field hockey player who plays as a defender for Old Georgians and ex England and Great Britain national teams.

He has also previously played for Wimbledon, Loughborough Students', Brooklands MU, Crewe Vagrants and Reigate Priory Hockey Club.

Weir made his international debut against India in December 2012 at the Melbourne Champions Trophy, only 11 years after he first started playing hockey for the Crewe Vagrants.

He played for England in the men's hockey tournament at the 2014 Commonwealth Games where he won a bronze medal.

This biographical article relating to an English field hockey figure is a stub.