Seto Chihiro

 (瀬斗ちひろ) is a Japanese idol, a founding member of Uchouten Leaf, a former founding member of Owaranai Yoru., and a former member of AMOUR.

She joined AMOUR in April 2021, and graduated in March 2022.

She left Owaranai Yoru. on May 31, 2022.