O (Himi Shi) Ogakuchi (Uozu Shi) Ogawaji (Toyama Shi) Ohara (Nanto Shi) Omata (Imizu Shi) Okitsukahara (Himi Shi) Ogume (Himi Shi) Otaki (Takaoka Shi) Ogino (Nanto Shi) Ohara (Toyama Shi) Omi Ō (Shimoniikawa Gun) Ōienoshō (Nakaniikawa Gun) Ōshōzu (Toyama Shi) Ōshimizu (Nanto Shi) Ōshima (Nanto Shi) Ōkuzushima (Himi Shi) Ōzakai (Toyama Shi) Ōyama-matsunoki (Nanto Shi) Ōmaki (Toyama Shi) Ōshima (Tonami Shi) Ōta