Cognomen Buasan (Buasan 
) , in all the world, is quite a rare surname. The family name Buasan is characteristic of South-eastern Asia, particularly Philippines, where it is a rare surname, Indonesia, and Thailand. Much less frequently, Buasan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Buasan | Indonesia, Philippines, China, Malaysia, Thailand |
| bahar buasan Indonesian politician (born 1964), ID (b. 1964) |
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| michael buasan badminton player, US (b. 1985) |
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Ryan, Emely, Henry, Felix, Irene, Marcos, Melvin, Melody, Salman, Sudjai, Elmer, Anucha, Phadet, Rahmah, Raquel, Rodney, Rowena, Darwin, Thelma, Teresa, Nestor, Arlene, Elling, Nancy, Jeric, Gina, Jose, Joel, Joey, Jojo, Mario, Amado, Ayman, Bakri, Trina, Bahar, Kathy, Pedro, Rodel, Ruben, Diony, Grace, Liezl, Lydia, Jaime, Bahim, and Evelyn