Vagharshak Kosyan is an Armenian-Abkhazian military leader and politician.

[2] His family came from Ordu and took refugee in Abkhazia during the Armenian genocide.

[2] During the War in Abkhazia, Kosyan organized the creation of the Armenian motorized infantry Bagramyan Battalion within the Abkhazian separatist army.

He was praised for combat effectiveness by Abkhazian President Vladislav Ardzinba.

For his services, Kosyan was awarded the Hero of Abkhazia, Order of Leon, and Medal "For Courage" honors.