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

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