Mu'izz al-Din Husayn ibn Ghiyath al-Din Kart

Mu'izz al-Din Husayn ibn Ghiyath al-Din was Kart malik of Herat, ruler of the Kart dynasty in Khorasan. He came to power around 1331 and expanded his principality after the Ilkhanate fragmented in 1335.

He allied with Togha Temür, defeated the Sarbadars at the Battle of Zava in 1342, and campaigned against the Chagatai Mongols, taking the young Timur into his service. In 1349 he ceased paying tribute and ruled independently as sultan until his death in 1370, when his son Pir Ali succeeded him.