Ōmiya was a city located in Saitama Prefecture, Japan. On May 1, 2001, Ōmiya was merged with the cities of Urawa and Yono to create the city of Saitama. Since April 1, 2003, the area of former Ōmiya City has been divided into 4 wards: Kita-ku, Minuma-ku, Nishi-ku and Ōmiya-ku of Saitama City.