Hiraiwa (written: 平岩) is a Japanese surname. Notable people with the surname include:
*, Japanese ''daimyō''
*, Japanese actress
*, Japanese writer
*, Japanese artistic gymnast
See also
*
Hiraiwa Station
is a railway station in Itoigawa, Niigata, Japan, operated by West Japan Railway Company (JR West).
Lines
Hiraiwa Station is served by the Ōito Line and is 14.9 kilometers from the intermediate terminus of the line at Minami-Otari Station, a ...
, a railway station in Itoigawa, Niigata Prefecture, Japan
{{surname
Japanese-language surnames