Ono no Oyu (?-737) was a Japanese bureaucrat and a poet. He served under Ōtomo no Tabito during the Dazaifu administration. He rose to the rank of Assistant Governor-General (daini). Three of his tanka poems have been preserved in the Man'yōshū.

Tanka poem

・Awoni-yoshi Nara-no Miyako-ha Sakuhana-no Nihofuga-gotoku Ima-sakari-nari(Manyoushu 3-328)

means : In beautiful green, Here in Capital Nara, Spring flowers are now in full bloom.