Ashot II (Armenian: Աշոտ Բ; r. 914–29) was an Armenian monarch and the third king of the royal Bagratuni line. He was the son and successor of King Smbat I. His reign was filled with rebellions by pretenders to the throne, and foreign invasions, which Ashot fought off successfully, for which he is remembered by the epithet Yerkat (Երկաթ), or the Iron.
Ashot II had succeeded his father Smbat I upon the latter's death in 914. Smbat had fought off an invasion launched by the emir of Āzarbāijān, Yusuf Ibn Abi'l-Saj, but when Smbat surrendered he was tortured and beheaded by Yusuf in Yernjak. With his control of the central lands of Armenia, Yusuf installed Ashot, son of Shapuh and Ashot II's first cousin, in Dvin as the "anti-king" of Bagratid Armenia. Harried by Yusuf's forces, Ashot turned west for support. In 914, he visited Constantinople to receive aid from the crown regent for the young Emperor Constantine Porphyrogenitus, Zoe Karbonopsina.
There, Ashot was well received, and a Byzantine force was created to assist Armenia in defeating the Arabs. The force, accompanying Ashot and led by the Domestic of the Schools Leo Phokas, moved out the next year and marched along Upper Euphrates, entering Taron, meeting scant opposition from the Arabs. Ashot the anti-king and Yusuf's armies were unable to stop the Byzantine advance, which stopped short of capturing Dvin due to the onset of winter. Nevertheless, the force had returned Ashot to a powerful position in Armenia and managed to inflict heavy casualties against the Arabs.
This still left Ashot the anti-king in control of Dvin and civil war raged on from 918 to 920, when the pretender finally conceded defeat. Numerous other rebellions in Armenia also took place but Ashot was able to defeat each one of them. In 919, Yusuf had instigated a failed rebellion against the Caliph and was replaced by a far more well-disposed Arab governor, Subuk. In 922 he was recognized as the ruler of Armenia by the Abbasid caliph in Baghdad and Subuk recognized him as Shahanshah, or "king of kings."
Ironically, the Byzantines were distressed with Ashot's close relations with the Arabs and dispatched a new force under the Domestic of the Schools John Kourkouas, also of Armenian descent, to disrupt Ashot's position as king and to support the rebels fighting him. In 928, Kourkouas reached Dvin in an unsuccessful attempt to capture a city that was defended by both the Arabs and Ashot. In 923, the Caliph, facing troubles at home, released Yusuf, who traveled back to Armenia to unleash his fury against Ashot. He began demanding tribute from the Armenians rulers but faced considerable resistance by Ashot II. Time and again, Ashot was able to defeat and rout the Arab armies sent against him for several years. Finally, in 929, Yusuf died and a power struggle ensued between rival Iranian and Kurdish families in Āzarbāijān, thus reducing the Arab threat to Armenia. Byzantine emperor Romanos Lekapenos also turned his attention from the east to fight the Arabs in Syria. Ashot died without any sons or heirs and his daughter was married to the Duke of Sofia Nicholas and mothered Tsar Samuel of Bulgaria. He was succeeded ca. 929 by his brother Abas.
Ashot was married to Marie, daughter of Prince Sahak, founder of the Kingdom of Artsakh.
Ashot II features prominently as a character in Muratsan's nineteenth-century historical novel Gevorg Marzpetuni.