Family name Catam-Isan (Catam-Isan 
) , across the world, is quite a rare surname. The cognomen Catam-Isan is characteristic of South-eastern Asia, particularly Philippines, where it is quite a rare surname. Parts of the name also exists independently as a first name Catam, and a first name Isan.
Roy, Yoly, Maria, Mario, Magno, Mercy, Sales, Sammy, Susan, Alfie, Ariel, Arnel, Argie, Agnes, Ailyn, Chona, Carla, Belen, Betty, Pablo, Pedro, Ramon, Emee, Elma, Elvy, Elsa, Ivy, Ian, Mena, Alex, Ayan, Roel, Reez, Ruel, Rufo, Gina, Ramil, Leah, Lucy, Luis, Lyca, Jose, John, Joel, Juan, June, Nida, Noel, Lina, and Razel