Qutalmish ibn Arslan Isra'il (Turkish: Kutalmış Bey, Old Anatolian Turkish: قوتالمش بگ, Persian: قتلمش) (alternative spellings: Qutalmis, Kutalmish, Kutalmış) was a Turkic prince who was a member of Seljukid house in the 11th century. His son Kutalmışoğlu Suleiman, founded the Sultanate of Rum in Anatolia.

Kutalmish was the son of Arslan Yabgu and a cousin of Tughril and played a vital role in the conquests of the Seljuk Turks. In 1046, he was sent with an army by Tughril to force back the Byzantine army at Ganja and was victorious. (see Battle of Ganja (1046))

He supported a rebellion against Tughril and contested the succession to the throne with Alp Arslan. (see Battle of Damghan (1063)) According to the historian Ali ibn al-Athir, Kutalmish knew the sciences of the stars. He had five sons, among them Mansur and Suleiman, who was recognized as Sultan of Rûm by Malik Shah I in 1084.

"Kut Almış" means "he that has received fortune (majesty)".