Town that includes the name 'Nishinoyama' is the former Oaza Nishinoyama, Yamashinacho Town, that was reorganized into ten towns when it was integrated into Higashiyamaku Ward in 1931.
「西野山」を冠称する町名はもとの山科町大字西野山で、昭和6年、当時の東山区へ編入された際、10町に編成された。