Deer Harbor is an unincorporated community on Orcas Island in San Juan County, Washington, United States.

As with most San Juan Islands communities, Deer Harbor is known for its recreation and tourism, including kayaking, whale watching, and fishing.

Doe Bay is a community on the opposite side of the island from Deer Harbor.

Deer Harbor is assigned the ZIP code 98243.

This San Juan County, Washington state location article is a stub.