List of Famous people named Kayqubad

Kayqubad I or Alā ad-Dīn Kayqubād bin Kaykhusraw was the Seljuq Sultan of Rûm who reigned from 1220 to 1237. He expanded the borders of the sultanate at the expense of his neighbors, particularly the Mengujek Beylik and the Ayyubids, and established a Seljuq presence on the Mediterranean with his acquisition of the port of Kalon Oros, later renamed Ala'iyya in his honor. The sultan, sometimes styled "Kayqubad the Great", is remembered today for his rich architectural legacy and the brilliant court culture that flourished under his reign.

Kayqubad III (Old Anatolian Turkish: كَیقُباد سوم or ʿAlāʾ ad-Dīn Kayqubād bin Farāmurz was briefly sultan of the Sultanate of Rum between the years of 1298 and 1302. He was a nephew of the deposed Kaykaus II and had strong support among the Turkmen. As sultan he was a vassal of the Mongols and exercised no real power.

Kayqubad II was the Seljuk Sultan of Rûm from 1249-1257. He was the only son of the Seljuq Sultan of Rûm Kaykhusraw II and the Georgian princess Gurju Khatun. Kaykhusraw's elder sons, by different mothers, were Kaykaus II and Kilij Arslan IV, and also served as sultan after their father's death, often simultaneously. As son of the sultan’s favorite wife, he was designated heir. He had a weak constitution and was likely seven years old at the time of his father’s death in 1246.