Morioka (written: 森岡 or 守岡) is a Japanese surname. Notable people with the surname include:
Eiji Morioka (森岡 栄治, 1946–2004), Japanese boxer
Hatsuko Morioka (守岡 初子, born 1915), Japanese swimmer
Hiroshi Morioka (守岡 博), Japanese anime director and artist
Hiroyuki Morioka (森岡 浩之, born 1962), Japanese writer
Kaoru Morioka (森岡 薫, born 1979), Peruvian-born Japanese futsal player
Ken Morioka (森岡 賢, 1967–2016), Japanese musician
Kōichirō Morioka (森岡 紘一朗, born 1985), Japanese racewalker
Masahiro Morioka (森岡 正博, born 1958), Japanese philosopher
Ryuzo Morioka (森岡 隆三, born 1975), Japanese footballer
Ryosuke Morioka (森岡 良介, born 1984), Japanese baseball player
Ryota Morioka (森岡 亮太, born 1991), Japanese footballer
Shigeru Morioka (森岡 茂, born 1973), Japanese footballer
Zak Morioka (born 1978), Brazilian racing driver
