Kayōmon-in no Echizen

was a waka poet and Japanese noblewoman active in the Kamakura period. She served , the mother of Emperor Go-Toba as well as Go-Toba's daughter Kayōmon-in. Although the dates of her life are difficult to determine, she was still writing poetry as late as 1248.

Her work appears in a large number of imperial poetry collections, including Shingoshūi Wakashū, Senzai Wakashū, Shokugosen Wakashū, Gyokuyō Wakashū, Shinsenzai Wakashū, Shinchokusen Wakashū, and others. Seven of her poems were collected in the Shin Kokin Wakashū. She was a member of the Ōnakatomi clan and likely the daughter of , the chief priest-administrator of Ise Shrine. She was designated a member of the . She is also known as .

Poetry One of her poems that was included in the Shin Kokin Wakashū was a direct reference to an anonymous poem in the Kokin Wakashū written 300 years prior.