Where does “Аладдин” come from?

Аладдин (Russian) comes from Arabic عَلَاء الدِّين — nobility of the faith.

Ancestry of “Аладдин”, step by step

Step	Language	Word	Meaning
1	Arabic	عَلَاء الدِّين	nobility of the faith

Аладдин — Etymology, Origin & Word History | Etymology Explorer