Miyashita (written: 宮下) is a Japanese surname. Notable people with the surname include:
Haruka Miyashita (宮下 遥, born 1994), Japanese volleyball player
Hidehiro Miyashita (宮下 秀洋, 1913–1976), Japanese Go player
Ichiro Miyashita (宮下 一郎, born 1958), Japanese politician
Junichi Miyashita (宮下 純一, born 1983), Japanese swimmer
Junko Miyashita (宮下 順子, born 1949), Japanese actress
Kazuhiro Miyashita (宮下 和広, born 1961), Japanese handball player
Masahiro Miyashita (born 1975), Japanese footballer
Tomomi Miyashita (宮下 ともみ, born 1982), Japanese actress
Yuya Miyashita (宮下 雄也, born 1985), Japanese singer and actor
