Sarumaru Dayū

was a waka poet in the early Heian period. He is a member of the , but there are no detailed histories or legends about him. There is a possibility that there never was such a person. Some believe him to have been Prince Yamashiro no Ōe.

Poetry example The following waka is attributed to him, a classic :

JapaneseRōmajiEnglish translation奥山に 紅葉踏みわけ 鳴く鹿の 声きく時ぞ 秋はかなしきOkuyama ni Momiji fumiwake Naku shika no Koe kiku toki zo Aki wa kanashikiAutumn at its saddest— Rustling through the leaves and moving on alone deep into the mountains, I hear a lonely stag belling for his doe.

This poem is the 215th poem of the Kokin Wakashū, and was also incorporated into Fujiwara no Teika's famous Ogura Hyakunin Isshu, as number 5.