A
- (Province of Pangasinan) Anonang
- (Province of Pangasinan) Anomlid
- (Province of Ilocos Sur) Anonang Minor
- (Province of Ilocos Sur) Anonang Mayor
- (Province of Pangasinan) Annam
- (Province of Pangasinan) Anlabo
- (Province of Pangasinan) Angio
- (Province of La Union) Angin
- (Province of Ilocos Norte) Angapang Sur
- (Province of La Union) Angcaoay
- (Province of Pangasinan) Angayan Norte
- (Province of Pangasinan) Angalatan
- (Province of La Union) Anduyan
- (Province of Pangasinan) Andangin
- (Province of Ilocos Sur) Ancheta
- (Province of Pangasinan) Anapao
- (Province of Pangasinan) An-Anonas
- (Province of Ilocos Sur) An- Annam
- (Province of Ilocos Norte) Anangul
- (Province of Ilocos Sur) An-ana-ao
- (Province of Ilocos Sur) Ananao
- (Province of Ilocos Sur) Ampuagan
- (Province of Ilocos Sur) Ampayao
- (Province of Ilocos Sur) Ampandula
- (Province of La Union) Amontoc
- (Province of La Union) Amlang
- (Province of Pangasinan) Amistad
- (Province of Ilocos Sur) Amilongon
- (Province of Ilocos Sur) Amguid
- (Province of Ilocos Sur) Amgayang