Kasumi Yamaya (山谷 花純, Yamaya Kasumi, born December 26, 1996) is a Japanese actress who is affiliated with Avex Vanguard.

She played the role of Kasumi Momochi (Momo Ninger) in the 2015 Super Sentai TV series Shuriken Sentai Ninninger.

In 2007, Yamaya, who was born in Miyagi Prefecture, passed the Actor Talent Model Audition application which was sponsored by the Avex Group.

In the same year, Yamaya appeared in the drama Love Letter.

As of October 2013, Yamaya is currently represented by Avex Vanguard, Avex Group's spin-off office.