Mathias Muchus (born February 15, 1957) is an Indonesian actor, songwriter, and composer. One of the roles that catapulted his name as an actor was when he played Tarjo in the series Losmen (1986). Mathias is known for often playing roles in romantic dramas, such as Give Me Time (1986), Istana Kecantikan (1988) and Cintaku di Way Kambas (1990).