Sal Rei is a city[2] on the northwestern coast of the island of Boa Vista in eastern Cape Verde.

Sal Rei is the island's main urban settlement, and the seat of the Boa Vista Municipality.

Sal Rei has a port on the bay with ferry routes to the islands of Santiago (Praia), Sal (Santa Maria) and Maio (Cidade do Maio).

[3] West of the port lies the small islet of Ilhéu de Sal Rei.

Sal Rei is in a desert climate zone as does the rest of the island.