I
- (Province of Lanao del Sur) Itil
- (Province of Sulu) Igang
- (Province of Maguindanao) Inawan
- (Province of Tawi-Tawi) Ipil
- (Province of Lanao del Sur) Ibus Island
- (Province of Maguindanao) Igabay
- (Province of Lanao del Sur) Ig-Abay
- (Province of Maguindanao) Iganatalik
- (Province of Sulu) Igangan
- (Province of Sulu) Igasan
- (Province of Sulu) Imodan
- (Province of Lanao del Sur) Imum Saraguidan
- (Province of Maguindanao) Inatian
- (Province of Maguindanao) Inawan-Bucana
- (Province of Sulu) Indanan
- (Province of Tawi-Tawi) Indangan Island
- (Province of Lanao del Sur) Inodaran
- (Province of Maguindanao) Inug-Ug
- (Province of Lanao del Sur) Inoma
- (Province of Maguindanao) Inudal
- (Province of Sulu) Ipil
- (Province of Basilan) Isla de Kaulungan
- (Province of Basilan) Isla de Linungan
- (Province of Basilan) Isla de Sibago
- (Province of Maguindanao) Isulan
- (Province of Lanao del Sur) Ingud
- (Province of Maguindanao) Idtig