Shadowood is an unincorporated community in Clackamas County, Oregon, United States, about four miles south of Lake Oswego on the Tualatin River east of Shipley Bridge. Shadowood has a West Linn ZIP code. The Shadowood area is a rural neighborhood comprising approximately 64 residences on both sides of a ravine formed by an unnamed creek and containing wetlands. The subdivision is served by a water system originally constructed in 1922 that started providing service in 1924. The subdivision is named Shadow Wood Park and was originally a 1920s development of recreational retreats. The original residences were American Craftsman/Rustic-style log houses.