宮相小学校は和歌山県新宮市（旧・熊野川町）にあった学校。 1972年に三津野小学校と統合し熊野川町立熊野川小学校（現・新宮市立熊野川小学校）となり閉校。
Miya Minori elementary school was a school in Wakayama prefecture Shingu city (formerly Kumano River Town). In 1972, it integrated with Mitsui Elementary School and closed as Kumano River Town Kumano River Elementary School (now · Shingu Municipal Kumano River Elementary School) closed.