Isonokami no Otomaro

 was a Japanese noble and scholar of the Nara period. He was the son of "sadaijin" Isonokami no Maro. He reached the court rank of and the position of "chūnagon".
Life.
In 724, Otomaro was promoted from to . In 732 he was promoted again to and governor of Tanba province. Under the successive administrations of the four sons of Fujiwara no Fuhito and Tachibana no Moroe, Otomaro rose quickly, to in 736, in 737, and in 738 to and "sadaiben" in the "Daijō-kan".
In 739 he was charged with an affair with Kume no Wakame, the wife of Fujiwara no Umakai, and exiled to Tosa Province.
He was soon pardoned, and in 743 rose again to . Passing through various ministerial positions, he joined the ranks of the "kugyō" in 748 with a promotion to and "sangi". In 749, he was made "chūnagon". He was also appointed in 746 as an envoy to Tang China, but the mission was cancelled. The planned objectives of the mission are supposed to have been to check Silla, with which Japan's relations were strained, and to import gold.
In 750, Otomaro died. His final rank was , and he held the positions of "chūnagon" and chief administrator of the Ministry of the Center.