The Chiesa della Santissima Trinità dei Pellegrini (Church of the Most Holy Trinity of Pilgrims) is a church in the historic city centre of Rome. In the Regola rione, it neighbours other important historic buildings such as the Palazzo Farnese, Ponte Sisto and the Via Giulia.
In 2008 Pope Benedict XVI entrusted the parish to the Priestly Fraternity of St. Peter (FSSP), a religious order dedicated to the celebration and preservation of the Tridentine Mass (Extraordinary form of the Mass). The SS Trinità dei Pellegrini provides the unique opportunity of the Latin Tridentine Mass for the local community, as well as tourists and pilgrims.