T
- (Province of Ilocos Sur) Tiagan
- (Province of Pangasinan) Telbang
- (Province of Pangasinan) Tebuel
- (Province of Pangasinan) Taytaybaques
- (Province of Ilocos Sur) Tay-Ac
- (Province of Pangasinan) Tawintawin
- (Province of La Union) Tavora
- (Province of La Union) Tavora East
- (Province of Ilocos Norte) Tasod
- (Province of Pangasinan) Tatarao
- (Province of Ilocos Norte) Tartarabang
- (Province of Ilocos Norte) Tarrag
- (Province of Pangasinan) Tarece
- (Province of Pangasinan) Tarectec
- (Province of Ilocos Sur) Tarangotong
- (Province of Ilocos Sur) Taramuting
- (Province of Pangasinan) Tara
- (Province of Pangasinan) Takipan
- (Province of Ilocos Sur) Tapao
- (Province of Ilocos Norte) Tapao
- (Province of La Union) Taoang
- (Province of La Union) Tanquigan
- (Province of La Union) Tanqui
- (Province of Pangasinan) Tanobong
- (Province of La Union) Tanglag
- (Province of Ilocos Norte) Tangid
- (Province of Ilocos Norte) Tangaoan
- (Province of Ilocos Norte) Tangdan
- (Province of Ilocos Sur) Tangaoan
- (Province of Ilocos Sur) Tangaoan