Căianu (Hungarian: Magyarkályán; German: Klandorf) is a commune in Cluj County, Romania. It is composed of six villages: Bărăi (Báré), Căianu, Căianu Mic (Kiskályán), Căianu-Vamă (Kályánivám), Vaida-Cămăraş (Vajdakamarás) and Văleni (Lárgatanya).
According to the 2011 census, Romanians made up 59.9% of the population, Hungarians made up 37.4% and Roma made up 2.7%.