Mkrtich Aleksani Arzumanyan (Armenian: Մկրտիչ Ալեքսանի Արզումանյան; born August 10, 1976), better known as Mko (Armenian: Մկո) is an Armenian actor, humorist, showman, screenwriter, and producer. He was born in Gyumri (formerly Leninakan). He is known from the comedy duo "Hayko Mko" (with Hayk Marutyan). The duo’s most famous shows were Kargin Haghordum and Kargin Serial. Due to these, he is widely known as Kargin Mko (Armenian: Կարգին Մկո).