North Secretary Island is located in the Gulf Islands where Trincomali Channel and Houstoun Passage meet in the Gulf Islands region of the South Coast of British Columbia, Canada. It is 138 acres (0.56 km²) in size and is located in Trincomali Channel as part of the Secretary Islands group off the north tip of Saltspring Island. There are two islands in the Secretary Islands group, the southern being named south secretary and the larger one being named North Secretary Island.