Abbas Mirza (Persian: عباس میرزا; 26 August 1789 – 25 October 1833) was the Qajar crown prince of Iran during the reign of his father Fath-Ali Shah Qajar (r. 1797–1834). As governor of the vulnerable Azerbaijan province, he played a crucial part in the two wars against the Russian Empire (1804–1813 and 1826–1828), as well as the war of 1821–1823 against the Ottoman Empire.