Allahyar Khan Devellu-Qajar Asef al-Dowleh (Persian: الله‌یارخان آصف‌الدوله) was the prime minister of Iran under Fath-Ali Shah Qajar (r. 1797–1834) from 1824 to 1828.

Asef al-Dowleh was a hardline proponent of intensifying the Russo-Iranian War of 1826–1828, performed ineffectively on the battlefield, and was among the first to evacuate to the city of Tabriz.

[3] After Agha Mohammad Khan's murder in 1797, Asef al-Dowleh's father was crucial in ensuring that the capital of Tehran was secure in time for the arrival of Fath-Ali Shah Qajar (r. 1797–1834).

[1] In early 1825, the northern bank of Lake Gokcha, which the Iranians believed to be a part of their realm, was seized by the Russians under the orders of Aleksey Petrovich Yermolov, the governor of Georgia.

The state of the Muslim minority under Russian authority and, lastly, whether and to what extent Russia had been weakened as a result of its internal crises, were secondary concerns.

Furthermore, the war party's interpretation of Russian events was more optimistic than realistic, arguing that Russia was weak overall, especially in the Caucasus due to Yermolov's recent defeats and the Decembrist revolt.

The peace party at Fath-Ali Shah's court was ultimately outmanoeuvred and the final decision was to launch full-scale warfare against the Russians.

Mirza Masih Tehrani then issued a fatwa, which led to the slaughter of Griboyedov and all but one of the seventy-person personnel of the Russian embassy by an enraged crowd.