or Ara River may refer to:
*
Arakawa River (Kanto), which flows from Saitama Prefecture and through Tokyo to Tokyo Bay
*
Arakawa River (Uetsu), which flows from Yamagata Prefecture and through Niigata Prefecture to the Sea of Japan.
*
Arakawa River (Fukushima), which starts and finishes in Fukushima City, Fukushima
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