The Chehalis Western Railroad (reporting mark CWWR) was the name of two different shortline railroads that were owned and operated by Weyerhaeuser between 1936 and 1993. The first Chehalis Western, which existed from 1936 until 1975, was a shortline Class III railroad operating in Washington state, while the second one, which existed from 1981 until 1993, was a private railroad that operated on a different set of lines that Weyerhaeuser had later acquired.