Moonbin & Sanha (Korean: 문빈&산하; Japanese: ムンビン & 三葉) is the first sub-unit of the boy group ASTRO. They made their debut on September 14, 2020, with the mini album In-Out. On April 19, 2023, Fantagio announced the death of Moonbin due to undisclosed reasons, thus ending the duo subunit.