Kiyohara no Motosuke (清原 元輔, 908 – June 990) was a Heian period waka poet and Japanese nobleman. His daughter was the Heian poet and author Sei Shōnagon, famous today for writing The Pillow Book. He is designated a member of the Thirty-six Poetry Immortals, and one of his poems is included in the famous Ogura Hyakunin Isshu. His court career included terms as governor of Kawachi Province and Higo Province.
His poems are included in several official poetry anthologies, including the Shūi Wakashū. A personal collection known as the Motosukeshū (元輔集) also remains.