Companies catalogue
- OTS PC Sankai Nishinihon Logistics, Ōsaka-shi
- OXY-S -Leather Craft-, Hachinohe-shi
- Oasa Health Center, Kitahiroshima-chō
- Oasa Nursery School, Kitahiroshima-chō
- Oasis, Yanai-shi
- Obaringo Orchards, Yamaguchi-shi
- Ochi Heart Clinic, Masuda-shi
- Ocho Liquor Store, Amagasaki-shi
- Oda Clinic, Shimonoseki-shi
- Odaki, Akiōta
- Odono Clinic, Yamaguchi-shi
- Odori Clinic, Shūnan-shi
- Odoshi Shrine, Bungotakada
- Office-56, 八戸市
- OfficeT.T, Hachinohe-shi
- Ofuji Clinics, Hagi-shi
- Ogasawara Construction Ltd., Hachinohe-shi
- Ogenki Clinic, Suōōshima-chō
- Ogino Internal Medicine Clinic, Kudamatsu-shi
- Oguni Nursery, Hamada-shi
- Ohana, Yamaguchi-shi
- Oharagaiku Park, Iwakuni
- Ohirayamasancho Park, Hōfu-shi
- Ohta Hair Salon, Hachinohe-shi
- Oi Nursery, Hagi-shi
- Oichi Parking Lot, Yamaguchi-shi
- Oikawa Hair Salon, Hachinohe-shi
- Oita Kenritsu Nakatsuminami High School, Nakatsu-shi
- Oji Gum Kasei Workers Union, Hōfu-shi
- Ojihachimangu, Hamada-shi
- Okabe Recycling, Yamaguchi-shi
- Okada Liquor Store, Nishinomiya-shi
- Okaderaso Group Home, Shūnan-shi
- Okamoto Gastroenterologist Internal Medicine Clinic, Hamada-shi
- Okamotoshinkyu Massage Clinic, Ōji-chō
- Okamura Parking Lot, Iwakuni
- Okamuraseisakusho Osaka Logistics Ltd., Ōsaka-shi
- Okawa Iron Works, Hōfu-shi
- Okazaki, Shūnan-shi
- Okazaki Ringo Orchards, Yamaguchi-shi
- Okii Clinic, Iwakuni-shi
- Okubo Liquor Store, Nishinomiya-shi
- Okuda Liquor Store, Itami-shi
- Okuratake Shrine, Yamaguchi-shi
- Omae Construction, Hashikami-chō
- Omichi Liquor Store, Toyonaka-shi
- Omichi Liquor Store, Toyonaka-shi
- Omoto Adult Day Care, Hachinohe-shi
- Omoto Shrine, Hamada-shi
- Omoto Shrine, 鹿足郡津和野町
- Omoto Shrine, Hamada-shi
- Omoto Shrine, 鹿足郡津和野
- Omoto Shrine, 鹿足郡津和野町
- Omura Shrine, Yamaguchi
- On Falls in Otada, Tsuwano
- On-Time Staffing, Uruma-shi
- On-yasai, Yanai-shi
- Onan Choritsu Hinui Elementary School, Ōnan-chō
- Onan Choritsu Ichigi Elementary School, Ōnan-chō
- Onan Choritsu Iwami Junior High School, Ōnan-chō
- Onan Choritsu Iwamihigashi Elementary School, Ōnan-chō
- Onan Choritsu Mizuho Elementary School, Ōnan-chō
- Onan Choritsu Mizuho Junior High School, Ōnan-chō
- Onan Choritsu Shokuno School, Ōnan-chō
- Onan Choritsu Yakami Elementary School, Ōnan-chō
- Ono Clinic, Shūnan-shi
- Ono Fishing Tackle Shop, Hachinohe-shi
- Ono Nursery, Hōfu-shi
- Onoda Central Park, Sanyōonoda-shi
- Onohachimangu, Hirao-chō
- Onuka, Ōsaka-shi
- Ooitakenritsukuni School, Kunisaki-shi
- Ooka Shrine, 鹿足郡吉賀町
- Optima Reform（オプティマ リフォーム）, Hachinohe-shi
- Osaba Family Clinic, Yamaguchi-shi
- Osakaya Sushi, Kudamatsu-shi
- Oseto, Hikari-shi
- Oshare Hair Salon, Hachinohe-shi
- Oshima Bridge, Suō-Ōshima
- Oshima Motor Driving School, Suōōshima-chō
- Oshima Nursery, Hagi-shi
- Oshiro Pediatrics, Shūnan-shi
- Otake Pastry Shop, Oirase-chō
- Otake Shiritsu Otake Elementary School, Ōtake-shi
- Otaki Shrine, Ōtake-shi
- Otarashihachimansha, Himeshima-mura
- Otomi Shrine, Buzen-shi
- Otorijo Clinic, Yamaguchi-shi
- Otsushima Clinic, Shūnan-shi
- Ouchikorin Nursery, Yamaguchi-shi
- Ouchinakayoshi Nursery School, Yamaguchi-shi
- Ouchisukoyaka Nursery, Yamaguchi-shi
- Oyabugaiku Park, Iwakuni
- Ozawa Internal Medicine Clinic, Ube-shi
- Ozu City Hall, Ōzu-shi
- Ozu Shiritsu Awazu Elementary School, Ōzu-shi
- Ozu Shiritsu Nagahama Elementary School, Ozu
- Ozu Shiritsu Shirataki Elementary School, Ōzu-shi
- Ozu Shiritsu Yamato Elementary School, Ōzu-shi
- Ozushi Nagahama Health Center, Ōzu-shi