A
- (Province of Zambales) Anonang
- (Province of Bulacan) Alawang
- (Province of Zambales) Agat Island
- (Province of Tarlac) Ayson
- (Province of Nueva Ecija) Ayos Lomboy
- (Province of Bataan) Ayam
- (Province of Nueva Ecija) Awayan
- (Province of Nueva Ecija) Aulo
- (Province of Pampanga) Atlu-bola
- (Province of Bulacan) Atlag
- (Province of Tarlac) Atindo
- (Province of Tarlac) Atencio
- (Province of Nueva Ecija) Atate
- (Province of Tarlac) Asung
- (Province of Pampanga) Asuncion
- (Province of Tarlac) Asturias
- (Province of Nueva Ecija) Asta
- (Province of Nueva Ecija) Asong
- (Province of Zambales) Ashinan
- (Province of Tarlac) Aringin
- (Province of Nueva Ecija) Arimal
- (Province of Tarlac) Aranguren
- (Province of Tarlac) Apulid
- (Province of Nueva Ecija) Apugan
- (Province of Bulacan) Apugan
- (Province of Bulacan) Apugan
- (Province of Tarlac) Apsayan
- (Province of Zambales) Apo-Apo
- (Province of Bulacan) Anyatam
- (Province of Tarlac) Anupul