O (Inagi-shi) Oshitate (Edogawa Ku) Okinomiyachō (Katsushika Ku) Okudo (Adachi Ku) Okino (Katsushika Ku) Ohanajaya (Akiruno-shi) Otsu Ō (Adachi Ku) Ōgi (Adachi Ku) Ōyata (Kita-ku) Ōji-honchō (Itabashi-ku) Ōharachō 1 2