Sati Beg (fl. 1316–1345) was an Ilkhanid princess, the sister of Il-Khan Abu Sa'id (r. 1316–33). She was the consort of amir Chupan (1319–27), Il-Khan Arpa (r. 1335–36), and Il-Khan Suleiman (r. 1339–43). In 1338–39, she was briefly the Ilkhanid khatun (queen regnant) during internal conflicts (and fragmentation), appointed by a Chobanid faction led by Hassan Kuchak.
Upon her brother's accession in 1316, Sati Beg was betrothed to the amir Chupan, one of the most powerful individuals in the Ilkhanid court. They were wed in 1319; their marriage produced a son, Surgan. When Chupan and Abu Sa'id came into conflict in 1327, Sati Beg was returned to the Ilkhan. Chupan was executed that same year at Abu Sa'id's insistence; Sati Beg and Surgan were spared.
Following Abu Sa'id's death in 1335, the Ilkhanate began to disintegrate. By 1336, Sati Beg and Surgan had taken the side of the founder of the Jalayirid dynasty, Hasan Buzurg. After the latter seized control of western Persia, Surgan was made governor of Karabakh (in modern Azerbaijan), where he and his mother moved to. However, when a grandson of Chupan, Hasan Kucek, defeated Hasan Buzurg in July 1338, Sati Beg and Surgan defected to his camp. Taking advantage of her family ties, Hasan Kucek raised her to the Ilkhanid throne in July or August of that year. Her nominal authority did not extend beyond the Chobanid domains of northwestern Persia.
Hasan Buzurg, who still controlled southwestern Persia and Iraq, requested the assistance of another claimant of the Ilkhanid throne named Togha Temur. The latter invaded the Chobanid lands in early 1339. Hasan Kucek, however, promised Sati Beg's hand in marriage to him in exchange for an alliance. This proved, however, to be a ruse; the intent was merely to alienate Hasan Buzurg from Togha Temur. The Jalayirids withdrew their support, and Togha Temur was forced to retreat without gaining Sati Beg. Meanwhile, Hasan Kucek was growing suspicious of Sati Beg and her son. Realizing that she was too valuable to be removed completely, he deposed her and then forced her to marry his new candidate for the throne, Suleiman Khan.