Nishioka (written: 西岡 lit. "west hill") is a Japanese surname. Notable people with the surname include:

* Daiki Nishioka (西岡 大輝, born 1988), Japanese footballer
* Haru Nishioka (西岡 ハル, 1905–1983), Japanese businessman and politician
* Hayward Nishioka (born 1942), American judoka
* Kenta Nishioka (西岡 謙太, born 1987), Japanese footballer
* Risa Nishioka (西岡 里紗, born 1997), Japanese women's basketball player
* Rodger Nishioka, American educator
* Shiho Nishioka (西岡 詩穂, born 1989), Japanese fencer
* Takeo Nishioka (西岡 武夫, 1936–2011), Japanese politician
* Toshiaki Nishioka (西岡 利晃, born 1976), Japanese boxer
* Tsunekazu Nishioka (西岡 常一, 1908–1995), Japanese carpenter
* Nishioka Tsuneo (西岡 常夫, 1924–2014), Japanese martial artist
* Tsutomu Nishioka (西岡 力, born 1956), Japanese academic
* Tsuyoshi Nishioka (西岡 剛, born 1984), Japanese baseball player
* Yoshie Nishioka (西岡 由恵, born 1974), Japanese swimmer
* Yoshihito Nishioka (西岡 良仁, born 1995), Japanese tennis player

Surname list

This page lists people with the surname Nishioka.
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