S
- (Province of Pampanga) San Pedro Segundo
- (Province of Pampanga) San Jose Mitla
- (Province of Pampanga) Sapa
- (Province of Pampanga) San Pablo Proper
- (Province of Tarlac) San Francisco
- (Province of Tarlac) Salcedo
- (Province of Pampanga) San Roque
- (Province of Nueva Ecija) Sampaloc
- (Province of Zambales) Santa Fe
- (Province of Pampanga) Santo Domingo
- (Province of Tarlac) Sinait
- (Province of Pampanga) San Antonio
- (Province of Nueva Ecija) San Fabian
- (Province of Nueva Ecija) Sibul
- (Province of Pampanga) Santo Niño
- (Province of Pampanga) Santa Maria
- (Province of Tarlac) Santa Maria
- (Province of Tarlac) San Pascual
- (Province of Nueva Ecija) Sagana
- (Province of Zambales) San Lorenzo
- (Province of Nueva Ecija) San Ricardo
- (Province of Nueva Ecija) San Carlos
- (Province of Bataan) San Benito
- (Province of Tarlac) San Antonio
- (Province of Tarlac) San Felipe
- (Province of Pampanga) San Carlos
- (Province of Bataan) Saysain
- (Province of Nueva Ecija) Siclong
- (Province of Bulacan) San Vincente
- (Province of Bulacan) Santa Lucia