William Chisholm (December 8, 1870 – April 28, 1936) was a Canadian politician.

Born in Heatherton, Antigonish County, Nova Scotia, Chisholm was educated at the Common School of Heatherton and graduated in arts from the St. Francis Xavier College, Antigonish.

He read law in the office of Colin F. Mclsaac, who was a member of the Grand Trunk Pacific Railway Commission.

A lawyer, he was first elected to the House of Commons of Canada for the electoral district of Antigonish in a 1905 by-election.

He resigned in 1916 and was elected to the Nova Scotia House of Assembly for the electoral district of Antigonish County.