Ashina Morikiyo served as a bushō during the Sengoku period.  He was the fifteenth head of the Ashina clan based in Kurokawa Castle in Aizu in Mutsu Province.

Morikiyo was born in 1490 as the son of Ashina Moritaka, the thirteenth head of the Ashina clan.

In the second month of 1521, after the death of his older brother, Ashina Morishige, Morikiyo inherited the family.  Soon after taking over as head of the family, Morikyo confronted a rebellion by the Matsumoto clan so he ousted Matsumoto Daigaku and his younger brother, Fujizaemon.  He then suppressed a rebellion by the Inawashiro clan and stabilized the clan.

Morikiyo allied with Date Tanemune and Sōma Akitane to oppose the Iwaki and Yūki clans and expand their territory in the direction of Nakadōri.

In 1541, Morikiyo transferred his role as head of the clan to his son, Ashina Moriuji, and retired.  He died on 8/21 of 1553 at the age of sixty-four.