Where does “Селма” come from?

Селма (Serbo-Croatian) comes from Arabic سلمى, from Arabic سَلْمَى.

Ancestry of “Селма”, step by step

Step	Language	Word	Meaning
1	Arabic	سلمى	feminine singular of أَسْلَم
2	Arabic	سَلْمَى	—

Селма — Etymology, Origin & Word History | Etymology Explorer