Beach is an unincorporated community on Lummi Island in Whatcom County, in the U.S. state of Washington.
A post office called Beach was established in 1882, and remained in operation until 1946. The community was named after Wade H. Beach, an early settler.
Coordinates: 48°42′57″N 122°41′02″W / 48.71583°N 122.68389°W