MOONBIN (문빈) (b. January 26, 1998 — ✝ April 19, 2023) was a South Korean singer, songwriter, dancer, and lead vocalist in the K-pop group ASTRO.

As a member of ASTRO, MOONBIN lent his songwriting skills to several songs in their discography including “너의 뒤에서 (By Your Side)” and “Merry-Go-Around.”

In 2020, MOONBIN and fellow ASTRO member YOON SANHA debuted as ASTRO’s first sub-unit MOONBIN & SANHA with the release of their debut EP, In-Out along with its lead single, “Bad Idea.” The unit received their first music show win eight days later, becoming the fastest sub-unit to receive a first music show win.

As a soloist, MOONBIN has performed two songs including “이끌려 (Desire).”