John Barnhill Dickie (March 30, 1829 – June 5, 1886) was a farmer, teacher and political figure in Nova Scotia, Canada.
He represented Colchester County in the Nova Scotia House of Assembly from 1874 to 1878 as an independent member.
He was born in Cornwallis, Nova Scotia, the son of Isaac Patton Dickie and Rebecca Barnhill.
Dickie was educated at the Mount Allison Academy and the Halifax Free Church College.
Dickie was treasurer for the poor, a justice of the peace and also, for a time, a major in the militia.