"Wanna be your star! Hello, I'm Sanha!
Yoon San Ha (윤산하) is a South Korean singer and actor under Fantagio Music. He is popularly known as the maknae and lead vocalist of the boy group ASTRO and its first-ever sub-unit Moonbin & Sanha.
Sanha debuted as the maknae of ASTRO on February 23, 2016 with the album "Spring Up".
Sanha debuted in the sub unit Moonbin & Sanha with fellow member Moonbin on September 14, 2020, with their first extended play In-Out.