L
- (Province of Pangasinan) Laoac East
- (Province of Ilocos Sur) Lantag
- (Province of Ilocos Sur) Lanipao
- (Province of Ilocos Sur) Lanipao
- (Province of Ilocos Sur) Langlangca Segundo
- (Province of Ilocos Sur) Langlangca Primero
- (Province of Pangasinan) Langiran
- (Province of La Union) Langcuas
- (Province of Pangasinan) Langca
- (Province of Ilocos Norte) Lang-ayang
- (Province of Ilocos Sur) Langayen
- (Province of Ilocos Sur) Langab
- (Province of Pangasinan) Landas
- (Province of Pangasinan) Landas
- (Province of Ilocos Sur) Lancuas
- (Province of Ilocos Norte) Lanas
- (Province of Pangasinan) Lanas
- (Province of Ilocos Norte) Lanao
- (Province of Pangasinan) Lambes Norte
- (Province of Pangasinan) Lambes
- (Province of Pangasinan) Lambes
- (Province of Ilocos Sur) Lamag
- (Province of Pangasinan) La Luna
- (Province of Ilocos Norte) Lalun
- (Province of Pangasinan) Laguit
- (Province of Ilocos Norte) Laguigu
- (Province of Ilocos Norte) Lagui
- (Province of La Union) Laguan
- (Province of Pangasinan) Lagataras Island
- (Province of Ilocos Sur) Laglagan