Mike Weir (disambiguation)

Mike Weir (born 1970) is a Canadian golfer.

Mike or Michael Weir may also refer to:


 * Mike Weir (politician) (born 1957), Scottish politician
 * Mike Weir (American football official), American football official
 * Michael Weir (murderer), first man in Britain to have been convicted of the same crime twice
 * Michael Weir (footballer) (born 1991), footballer from Jersey
 * Michael Scott Weir (1925–2006), British diplomat
 * Michael H. Weir Jr. (born 1948), American politician from Maryland