Family name Suttiwat (สุทธิวัฒน์ 
, Suttiwat , ศุทธิวัต ) , in the entire world, is a rare cognomen. The cognomen Suttiwat is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More frequently, Suttiwat is the forename as well as the last name.
Madlee, Kamonwat, Khamsaen, Prompool, Likkachai, Thongkam, Wongchai, Chuayduang, Chueakaew, Patipanvat, Panusopit, Leelatanon, Lohitharn, Nitisombat, Worathunmetha, Suksompiar, Songboonkaew, Soontraratpong, Boonpradid, Kittiudomsub, Vongsurakrai, Rattanaprom, Cheuakaew, Voraputthaporn, Chapanya, Aiemsaad, Kumnan, Kidmoa, Naskan, Homnan, Mahamit, Sornsak, Smanyaphirak, Artklar, Areromrat, Chumsri, Kongyam, Kongyaem, Komkham, Pangklin, Noibumrung, Wongyai, Yodthavee, Sukeenung, Sukkitprasert, Angsupachot, Arromrat, Changkid, and Wittayanukorn