Ōshiro (Oshiro or Ooshiro) is the transliteration of several Japanese, mostly Okinawan surnames. One of the names, 大城, means "big castle".
People with the name include:
Gackt (born 1973), Japanese singer-songwriter and actor born in Okinawa has probable birth name and surname Gakuto OshiroKaz Oshiro (born 1967), Okinawa born artist based in Los AngelesKūron Oshiro (尾城 九龍, born 1961) Japanese musical composer and arrangerMatsumi Ōshiro (大城 松美, fl. 1980–1990), Japanese voice actress born in TokyoMisaki Oshiro (born 1984), Japanese weightlifter born in OkinawaMiwa Oshiro (大城 美和, born 1983), Japanese gravure idol, model and actress born to Okinawan fatherNick Oshiro (born 1978), Japanese-American musician, drummer of the industrial metal band Static-XVanesa Oshiro (born 1981), Nikkei enka singer born in ArgentinaTatsuhiro Oshiro (大城 立裕, born 1925), Okinawan novelist and playwrightToshihiro Oshiro, Japanese martial artist born in Okinawa