Mahyadi Panggabean (born 8 January 1982) is an Indonesian former professional footballer and current coach. He played as a defender, and at times as a midfielder, for the Indonesia national football team.
His debut for the senior national team was in 2004 in a World Cup qualifying match for Indonesia against Turkmenistan. He was injured in the first match of the national team (against Bahrain) in Group D of the AFC Asian Cup 2007. In that game, he was substituted for another midfielder Eka Ramdani. Now he is an assistant coach for Sriwijaya F.C.
His father's name is Mahadun Panggabean and her mother's name is Dewana Silitonga. Mahyadi likes travelling and listening to all kinds of music.