Family name Ilahan (Ilahan 
) , in the world, is a rare last name. The last name Ilahan is characteristic of Philippines, where it is a rare surname, Malaysia, and India, where it is an extremely rare surname. Much less frequently, Ilahan is the forename as well as the last name.
Poy, Carol, Karim, Paung, Pablo, Rasma, Roger, Rover, Ruben, Dalma, Amina, Efrin, Faija, Oscar, Mariam, Masawa, Madiha, Shelma, Analyn, Bagdad, Benjan, Hamid, Benhar, Abrin, Anang, Gan, Lia, Jum, Nur, Sali, Said, Seha, Amar, Aida, Anora, Ruel, Tata, Elma, Emie, Etah, Mario, Salam, Salma, Sofia, Alnas, Jiba, and Kaisal