Kunohe Sanechika served as a bushō during the Sengoku and Azuchi-Momoyama periods.  He was a retainer of the Nanbu clan.

Sanechika was born as the second son of Kunohe Nobunaka, a bushō in Mutsu Province.

His formal wife was the second daughter of Nanbu Harumasa, the twenty-fourth head of the main branch of the Nanbu family.  After the death of Nanbu Harutsugu, the natural son of Harumasa, Sanechika came into conflict with Ishikawa Nobunao, the husband of Harumasa’s eldest daughter, over the issue of succession to the headship of the main branch of the Nanbu family, but was defeated.

In 1591, Sanechika, together with his older brother, Kunohe Masazane, gathered troops in opposition to the Nanbu in an event known as the Revolt of Kunohe Masazane.  Deeming these actions to constitute a rebellion, Toyotomi Hideyoshi dispatched troops to suppress them and, after their surrender, Sanechika and Masazane were slayed by the sword.