Hawadax Island is an island in the Rat Islands archipelago of the western Aleutian Islands in the U.S. state of Alaska. The island was formerly known as Rat Island until May 2012 when it was renamed Hawadax Island, which is an Aleut name meaning "entry" and "welcome". The island has a land area of 10.72 square miles (27.8 km2) and no permanent population. It is within the Alaska Maritime National Wildlife Refuge.