Henry Island is one of the San Juan Islands of San Juan County, Washington, United States.
It lies just off the northwest shore of San Juan Island.
Just northwest of the northern tip of Henry Island lies Battleship Island, a State bird sanctuary.
It has a land area of 4.126 km2 (1.593 sq mi) and had a total of19 permanent residents as of the 2010 census.
This San Juan County, Washington state location article is a stub.