Sant Joan de Boí is a Romanesque church situated in the territory of Vall de Boí, a commune in the valley of the same name, in the Province of Lleida in the autonomous community of Catalonia in Spain.

The Province of Lleida is one of the four provinces of Catalonia. It lies in northeastern Spain, in the western part of the autonomous community of Catalonia, and is bordered by the provinces of Giron