علاء الدين كيقباذ الثانى (ar), Kaykubad II (ca), Kai Kobad II. (de), Ala' al-Din Kay Qubad II (en), Kaykubad II (es), Kay Qubadh II (fr), Kayqubad II (it), Kayqubad II (nl), II. Alaeddin Keykubad (tr), 凱庫巴德二世 (zh)
Kayqubad II (Old Anatolian Turkish: كَیقُباد, Persian: علاء الدين كيقباد بن كيخسرو, ʿAlāʾ ad-Dīn Kayqubād bin Kaykhusraw)
was the youngest of the three sons of the Seljuq Sultan of Rûm Kaykhusraw II. (en)