Surname Kwansuwan (Kwansuwan 
) , in the world, is a rare family name. The last name Kwansuwan is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Sira, Jariyanan, Phaithoon, Pattayavadee, Nonglakana, Phuwadol, Phuwanai, Podjanee, Praornphan, Pachanee, Kittisak, Suphatchaya, Supaktra, Titirat, Phichot, Pramual, Somphet, Siriwat, Sirikan, Chatri, Sathit, Damri, Somya, Maneerat, and Watcharapong