Jack Coupar represented the electoral district of Colchester North, he was a member of the Progressive Conservative Party but never entered provincial politics.
John (Jack) Allen Coupar is a Canadian politician. He represented the electoral district of Colchester North in the Nova Scotia House of Assembly from 1984 to 1988. He was a member of the Progressive Conservative Party of Nova Scotia. Coupar entered provincial politics in the 1984 election, defeating Liberal incumbent Ed Lorraine by 160 votes in Colchester North. 
