Ashigarashimo District (足柄下郡, Ashigarashimo-gun) is a district of Japan located in western Kanagawa Prefecture, Japan. Most sparsely populated mountainous districts are part of the Fuji-Hakone-Izu National Park. The majority area of the city of Odawara was formerly part of Ashigarashimo District.
As of 2009, the district had an estimated population of 48,713 and a density of 346 persons per km2. The total area was 140.73 km2.