Harrington Harbour is an unconstituted locality (as defined by Statistics Canada in the Canada 2011 Census) within the municipality of Côte-Nord-du-Golfe-du-Saint-Laurent in the Côte-Nord region of Quebec, Canada. Its population in the 2011 census was 261.Harrington Harbour was originally founded near the end of the 19th century by fishermen from Newfoundland. The primary activity is commercial fishing for crabs, lobster, turbot, halibut, cod, and lumpfish.