Little Tancook Island is a Canadian island located off the coast of Nova Scotia. The island is one of the 365 islands dotting Mahone Bay. The island is 1.5 km (0.93 mi) long by 1 km (0.62 mi) wide and is roughly triangular in shape. It is separated from Big Tancook Island by the 1 km (0.62 mi) wide strait called "The Chops." It is located approximately 2 km (1.2 mi) off the Aspotogan Peninsula.

It is the second largest island in Mahone Bay after Big Tancook Island.