Arakawa (荒川) may refer to:
Arakawa (荒川) is a Japanese surname. Notable people with the surname include:
The Arakawa River (荒川, Ara-kawa) is a 173 km long river, and one of the principal rivers flowing through Tokyo.
It originates on Mount Kobushi in Saitama Prefecture, and empties into Tokyo Bay.
Coordinates: 36°08′10″N 139°22′06″E / 36.13611°N 139.36833°E / 36.13611; 139.36833