The Basilica of St. Stephen in the Round on the Celian Hill is an ancient basilica and titular church in Rome, Italy. Commonly named Santo Stefano Rotondo, the church is Hungary's "national church" in Rome, dedicated to both Saint Stephen, the first Christian martyr, and Stephen I, the sanctified first king of Hungary who converted to Christianity and promoted it in his kingdom. The minor basilica is also the rectory church of the Pontifical Collegium Germanicum et Hungaricum.
As of 2005, the Cardinal Priest or titular S. Stephano is Friedrich Wetter.