Last name Passanan (Passanan 
) , throughout the world, is an extremely rare family name. The surname Passanan is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Passanan is the forename as well as the last name.
Bunma, Jongjirawongsa, Kanokthonpiboon, Sanguanngam, Wongchaisa, Punyakuanchai, Kanthawong, Jaemjaras, Punchaidee, Kantawong, Boonchoom, Namdaeng, Jamjaras, Romviras, Raksapol, Singhavorakul, Punyakuanc, Arunroch, Suwannoi, Sirigard, Singpant, Wongjun, Juitang, Rasapol, Sriprach, Sriprat, Singpan, Hemkul, Bender, Cutter, Sukyai, Panyakuanchai, and Watcharakeeratiwong