All around the world, Reihan (Reihan 
, ريهان 
, Рейхан 
) is quite a common unisex first name. The forename Reihan is characteristic of Georgia, where it is quite a rare feminine name, Israel, where it is quite a rare largely girly, but uncommonly male name, and Indonesia, where it is quite a rare primarily boy's, but very infrequently feminine name. Measured by absolute frequency, it most frequently occurs in Indonesia, Egypt, and Israel. Much less frequently, Reihan is the last name as well as the forename.