The Ashby Manor Historic District is located in northwest Des Moines, Iowa, United States. It is a residential area that lies between Beaver Avenue, which is a major north–south artery, on the west and Ashby Park on the east. The historic period of the housing was 1925–1941. The street layout follows a curving pattern, which differentiates it from the grid pattern of the surrounding area. The streets also feature a mature tree canopy. The historic district has 148 properties of which 99 are houses and 49 are garages. Ninety-one properties are considered contributing properties and 57 are noncontributing. It has been listed on the National Register of Historic Places since 1992. It is a part of the Suburban Development in Des Moines Between the World Wars, 1918--1941 MPS.