John Smith MacIvor (March 27, 1913 – June 12, 1957) was a lawyer and political figure in Nova Scotia, Canada.
He represented Cape Breton South in the Nova Scotia House of Assembly from 1945 to 1956 as a Liberal member.
He was born in Glace Bay, Nova Scotia, the son of Malcolm MacIvor and Catherine Smith.
MacIvor practiced law in Sydney and served as provincial magistrate from 1942 to 1945.
This article about a Liberal party Member of the Nova Scotia House of Assembly is a stub.