Valentine Soap Workers Cottages

The Valentine Soap Workers Cottages are a pair of adjacent historic houses in Cambridge, Massachusetts, that are listed on the National Register of Historic Places.

The cottages are located at 5–7 Cottage Street and 101 Pearl Street. They were listed on the National Register of Historic Places on June 30, 1983.

The two cottages were built for worker housing in 1835, by local soap manufacturer Charles Valentine. Valentine's soap factory was located nearby at the corner of Valentine and Pearl Streets. Founded in 1828, it was at the time one of the largest manufacturing operations in the Cambridgeport section of the city. An historic marker for the cottages identifies them as the only examples of factory housing in Cambridge.