It completes or comprises:

• Persons' family name.
• Ōmiya, or is a female character in The Tale of Genji, an 11th century novel.
• Place name: it is or was used in the names of:
• Railway stations: See Ōmiya Station for an incomplete list.
• Local governments:
• Current ward / government names
• Ōmiya-ku, Saitama was Ōmiya, Saitama, Japan.
• Hitachi-Ōmiya, Ibaraki was Ōmiya, Naka District, Ibaraki, Japan.
• 大宮地域自治区 , Miyazaki, Miyazaki was Ōmiya, Miyazaki District, Miyazaki, Japan.
• Past government names
• Ōmiya, Chichibu District, Saitama was a town and now is a part of Chichibu, Saitama, Japan.
• Ōmiya, Watarai District, Mie was a town and now is a part of Taiki, Mie, Japan.
• Ōmiya, Naka District, Kyōto was a town and now is a part of Kyōtango, Kyoto, Japan.
• Ōmiya, Fuji District, Shizuoka was a town and now is part of Fujinomiya, Shizuoka, Japan.
• Ōmiya, Minami-Aizu District, Fukushima was a village and now is a part of Minamiaizu, Fukushima, Japan
• Ōmiya, Shioya District, Tochigi was a village and now is a part of Shioya, Tochigi, Japan.
• Ōmiya, Shimotsuga District, Tochigi was a village and now is a part of Tochigi, Tochigi, Japan.
• Ōmiya, Oku District, Okayama was a village and now is divided into Okayama, Okayama and Setouchi, Okayama, Japan.
• Ōmiya, Hino District, Tottori was a village and now is a part of Nichinan, Tottori, Japan.
• Sport clubs:
• Omiya Ardija is a professional football (soccer) club based in Ōmiya-ku, Saitama, Japan and calls Ōmiya Park Soccer Stadium home.
• Places of Interest:
• Ōmiya Bonsai Village, famous for bonsai pot gardening is located in Kita-ku, Saitama, Japan.
• Ōmiya-shuku, the fourth station on the 17-19th century Japanese national highway Nakasendō, located in current Ōmiya-ku, Saitama.