Saint Pierre Cathedral in Geneva, Switzerland is the principal church of the Reformed Protestant Church of Geneva. Previously it was a Roman Catholic cathedral, having been converted in 1535. It is known as the adopted home church of John Calvin, one of the leaders of the Protestant Reformation. Inside the church is a wooden chair used by Calvin.

Geneva is the second-most populous city in Switzerland and the most populous of the French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the capital of the Republic and Canton of Geneva, and a centre for international diplomacy. Geneva hosts the highest number of international organizations in the world.