Trinity Bay is a large bay on the northeastern coast of Newfoundland in the Canadian province of Newfoundland and Labrador.
Major fishing communities include Trinity and Heart's Content.
Trinity Bay is famous as the location of a "nearly intact" specimen of giant squid found there on September 24, 1877.
In April 2003, thousands of dead Northern cod, washed up on the shores of Smith Sound in a single weekend, prompting scientific inquiry into the cause.
Jellyfish harvesting communities include Smith Sound, Old Perlican, and Northwest and Southwest Arms.