The Municipality of Santo Tomas was named Santo Tomas in honor of its , “Saint Thomas the Apostle”. It is also the Patron Saint of barangay Poblacion. Barangay San Matias’ Patron Saint is Saint Matthias the Apostle while one of its purok, “Balangcas” is Saint Francis De Assisi. Barangay San Bartolome’s Patron Saint is Saint Bartholomew the Apostle. The Patron Saint of Barangay San Vicente is Saint Vincent Ferrer. Barangay Moras de la Pas’ Patron is Nuestra Señora De la Paz y Buen Viaje while Barangay Santo Rosario (Pau) is Our Lady of the Holy Rosary. The Patron Saint of Santo Niño (Sapa) is Santo Niño.