Bellingham Bay is a bay located on the northern Pacific coast of Washington state in the United States. It is separated from the Strait of Georgia on the west by the Lummi Peninsula, Portage Island, and Lummi Island. It is bordered on the east by Bellingham, Washington, to the south-east by the Chuckanut Mountains, and to the south by Samish Bay. The Nooksack River empties into the bay, as well as does Whatcom Creek.