Where does “Bahreïn” come from?

Bahreïn (French) comes from Arabic الْبَحْرَيْن — Bahrain; the two seas.

Ancestry of “Bahreïn”, step by step

Step	Language	Word	Meaning
1	Arabic	الْبَحْرَيْن	Bahrain; the two seas

Bahreïn — Etymology, Origin & Word History | Etymology Explorer