Glenbrook was a logging town in Benton County, Oregon, United States. Glenbrook lies on Alpine Road west of Alpine and south of Dawson. It is located at 44.3136°N -123.4064°W.
A sawmill operated by the Alsea River Lumber Company was established at Glenbrook in 1919, and a logging railroad into the surrounding forest was constructed at this time.[1] The town itself was built around the sawmill, and was "christened" with a large parade and barbecue in late August 1920.[2] As of 2024, little remains of Glenbrook apart from the mill pond.