Dōin (道因, 1090 — c. 1179; given name Fujiwara no Atsuyori 藤原 敦頼) was a Japanese waka poet of the late-Heian period. One of his poems was included in the Ogura Hyakunin Isshu, and forty-one of his poems were included in imperial collections.

He was born in 1090.^[1][2] His given name was Fujiwara no Atsuyori.^[2]

He served as Lieutenant of the Stables of the Left.^[1] He entered religion in 1172.^[1][2]

He died in around 1179.^[1]

Forty-one of his poems were included in imperial anthologies from the Senzai Wakashū on.^[1][2]

The following poem by him was included as No. 82 in Fujiwara no Teika's Ogura Hyakunin Isshu:

His private collections have not survived.^[1]

• Keene, Donald (1999). A History of Japanese Literature, Vol. 1: Seeds in the Heart — Japanese Literature from Earliest Times to the Late Sixteenth Century. New York: Columbia University Press. ISBN 978-0-231-11441-7.
• McMillan, Peter. 2010 (1st ed. 2008). One Hundred Poets, One Poem Each. New York: Columbia University Press.
• Suzuki Hideo, Yamaguchi Shin'ichi, Yoda Yasushi. 2009 (1st ed. 1997). Genshoku: Ogura Hyakunin Isshu. Tokyo: Bun'eidō.

• List of Dōin's poems in the International Research Center for Japanese Studies's online waka database.
• Dōin (also listed as Fujiwara no Atsuyori) on Kotobank.