Where does “Nina” come from?

Nina (Latvian) comes from Russian Ни́на, from Georgian ნინო, from Old Georgian ნინო.

Ancestry of “Nina”, step by step

Step	Language	Word	Meaning
1	Russian	Ни́на	—
2	Georgian	ნინო	Nino
3	Old Georgian	ნინო	—

Nina — Etymology, Origin & Word History | Etymology Explorer