William Weir
William Weir may refer to:
- William Alexander Weir (1858–1929), Quebec lawyer and politician
- William Weir (architect) (1865–1950), Scottish restorer of historic buildings
- William Weir, 1st Viscount Weir (1877–1959), Scottish industrialist
- William Weir, 3rd Viscount Weir (born 1933), British peer and businessman
- William Gilbert Weir (1896–1971), Canadian politician
- Bill Weir (born 1967), co-anchor of Good Morning America Weekend Edition
- Bill Weir (footballer), Australian rules footballer
- William Weir (aviator) (1891–?), World War I flying ace
- William Weir (trade unionist) (1868–?), British coal miner and politician
This disambiguation page lists articles about people with the same name.
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