William M. Blair (born May 25, 1836 – )[1] was a farmer and political figure in Nova Scotia, Canada. He represented Colchester County in the Nova Scotia House of Assembly from 1878 to 1886 as a Liberal-Conservative member.
He was born in Onslow, Nova Scotia and educated there. In 1864, he married Harriet Blair. He was lieutenant-colonel in the militia, commanding a Highlanders battalion from Picto, Hants and Colchester. Blair was also president of the Onslow Agricultural Society and chairman of the Agricultural Exhibition Committee.
His son was William Saxby Blair.[2]