Family name Unahan (Unahan 
) , across the world, is a rare surname. The surname Unahan is characteristic of South-eastern Asia, particularly Philippines, where it is a rare surname. Much less frequently, Unahan is the forename as well as the last name.
Rea, Michael, Anthony, Adelina, Lourdes, Jovelyn, Jenelyn, Erlinda, Eunelin, Vicente, Salvador, Salbador, Charlito, Bebe Darlyn, Reynaldo, Dionesio, Geronimo, Jeannewin, Marialisa, Saturnino, Saviniana, Carmilita, Martina, Maricel, Marilou, Victor, Raul, Ruth, Ryan, Jose, Jone, Joel, Aljem, Andre, Raffy, Rosie, Cresencia, Rolan, Nilda, Edwin, Helen, Zardo, Marife, Monico, Albert, Roland, Julius, Evelyn, Rogie, and Bonifacia