A
- (Province of Pangasinan) Amacpecan
- (Province of Pangasinan) Amacalan
- (Province of La Union) Alzate
- (Province of Ilocos Sur) Alulin
- (Province of La Union) Aludaid
- (Province of Ilocos Norte) Aslem
- (Province of Ilocos Norte) Alsem
- (Province of Pangasinan) Alos
- (Province of Ilocos Sur) Allangigan Segundo
- (Province of Ilocos Norte) Al-langigan
- (Province of Ilocos Norte) Allangigan
- (Province of Ilocos Norte) Allangigan
- (Province of La Union) Allangigan
- (Province of Ilocos Norte) Apaleng
- (Province of Pangasinan) Allabon
- (Province of Pangasinan) Alitaya
- (Province of Pangasinan) Alipangpang North
- (Province of Pangasinan) Alioecoec
- (Province of Ilocos Sur) Alincaoeg
- (Province of Pangasinan) Alimoneng
- (Province of Pangasinan) Alilao
- (Province of Pangasinan) Alige
- (Province of Pangasinan) Alibeng
- (Province of La Union) Alibangsay
- (Province of Ilocos Sur) Alibangbang
- (Province of Pangasinan) Aliaga
- (Province of Ilocos Sur) Alfonso
- (Province of Pangasinan) Alava
- (Province of Ilocos Norte) Alao-ao
- (Province of Ilocos Sur) Alanjin