卡扎尔王朝（Qājār dynasty，1794年～1925年），又称恺加王朝。伊朗北部卡扎尔部落（现代属于土库曼斯坦人）首领阿迦·穆罕默德·汗创建的王朝。阿迦·穆罕默德汗早年曾在桑德王朝（1750年～1794年）统治者卡里姆汗宫廷中作人质。1779年卡里姆汗死，阿迦·穆罕默德逃往北方根据地，并乘桑德王朝后裔争夺王位互相残杀之机扩张势力。1794年他攻破克尔曼，遂统治伊朗各主要省份。1796年加冕为伊朗国王，建都德黑兰。同年征服呼罗珊。

阿迦·穆罕默德去世后，经历了6个国王：

在法塔赫·阿里沙在位期间，伊朗于1804年～1813年和1826年～1828年两次同俄国发生战争，伊朗战败，失去大片土地。1848年～1852年发生了反封建的巴布教徒起义。1856年～1857年的英国-伊朗战争中，伊朗被迫永远放弃赫拉特（位于今阿富汗境内）。1905年～1911年发生了反帝反封建的资产阶级革命，穆罕默德·阿里·沙国王被迫召集议会，制定了伊朗第一部宪法。

The Qajar dynasty ( listen ; Persian:سلسله قاجار‎‎ Selsele-ye Qājār; also romanised as Ghajar, Kadjar, Qachar etc.; Azerbaijani:قاجارلار Qacarlar) was an Iranian royal dynasty of Turkic origin, specifically from the Qajar tribe, which ruled Persia (Iran) from 1785 to 1925. The state ruled by the dynasty was officially known as the Sublime State of Iran (Persian:دولت علیّه ایران‎‎ Dowlat-e Elliye ye Irān). The Qajar family took full control of Iran in 1794, deposing Lotf 'Ali Khan, the last of the Zand dynasty, and re-asserted Iranian sovereignty over large parts of the Caucasus and Central Asia. In 1796, Mohammad Khan Qajar seized Mashhad with ease, putting an end to the Afsharid dynasty, and Mohammad Khan was formally crowned as shah after his punitive campaign against Iran's Georgian subjects. In the Caucasus, the Qajar dynasty permanently lost many of Iran's integral areas to the Russians over the course of the 19th century, comprising modern-day Georgia, Dagestan, Azerbaijan, and Armenia.