Kaykaus I atau Izzuddin Kaykaus bin Kaykhusraw (bahasa Persia:عز الدين كيكاوس پور كيخسروcode: ar is deprecated ʿIzz ad-Dīn Kaykāwūs pour Kaykhusraw) adalah Sultan Rum dari tahun 1211 hingga kematiannya pada tahun 1220. Ia adalah putra tertua Kaykhusraw I.
Sumber
Bryer, Anthony; Winfield, David (1985). The Byzantine Monuments and Topography of the Pontos. Vol.1. Dumbarton Oaks.
Cahen, Claude (1968). Pre-Ottoman Turkey: A general survey of the material and spiritual culture and history c. 1071-1330. New York: Taplinger. hlm.120–121. hdl:2027/heb.00871. ISBN1-59740-456-X.
Cahen, Claude (1997). "Kayka'us I". Dalam Van Donzel, E.; Lewis, B.; Pellat, CH. (ed.). The Encyclopaedia of Islam. E.J. Brill.
Crane, H. (1993). "Notes on Saldjūq Architectural Patronage in Thirteenth Century Anatolia". Journal of the Economic and Social History of the Orient. 36 (1): 1–57. doi:10.1163/156852093X00010.
Peacock, A.C.S.; Yildiz, Sara Nur, ed. (2013). The Seljuks of Anatolia: Court and Society in the Medieval Middle East. I.B.Tauris. ISBN978-0857733467.
Redford, Scott (1991). "The Alaeddin Mosque in Konya Reconsidered". Artibus Asiae. 51 (1/2). Zürich: Artibus Asiae Publishers: 54–74 [70]. doi:10.2307/3249676. ISSN0004-3648. JSTOR3249676.
