Ichinomiya (一宮市, Ichinomiya-shi^?) is a city in Aichi Prefecture, Japan. The city is often called Owari-Ichinomiya to avoid confusion with another Ichinomiya (now part of the city of Toyokawa). The pre-expansion city was once part of now-defunct Nakashima District until September 1, 1921.

Ichinomiya literally means "the first shrine" of the province. In case of this city, it was Masumida Shrine of Owari Province.

On April 1, 2005, the city was expanded by absorbing the city of Bisai and the town of Kisogawa from Haguri District which will make the city the fourth largest in Aichi Prefecture, only behind (by largest to third largest) Nagoya, Toyota, and Toyohashi. Following this merger, the city now has a population of at least 380,000 and the city has scheduled to become a Core City sometime in the future.

There is one university in Ichinomiya, Shubun University. There are many public and private high schools and junior high schools, as well as junior colleges, such as Aichi Kiwami College of Nursing.

Rie Kitahara (北原里英, Kitahara Rie^?, born June 24, 1991 in Ichinomiya, Aichi) is a Japanese singer, actor and voice actor. member of the Japanese idol group AKB48. She debuted in 2008 in Team A and now is in Team B. She is part of the senbatsu, having been voted number 13, 16 and 13 in the AKB48 senbatsu elections. Since 2011, Kitahara is also a member of the group Not Yet.

Kitahara placed 13th in the 13th single members selection which took place in the end of June - beginning of July, 2009.

On August 13, 2010, Rie Kitahara debuted as a voice actress in the anime series Gakkō no Kowai Uwasa: Shin Hanako-san ga Kita!!.