Family name Tossawat (ทศวรรษ 
, Tossawat ) , worldwide, is an extremely rare last name. The surname Tossawat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, Tossawat is the forename as well as the last name.
Kanta, Chotivong, Chookliang, Pansomboon, Punkanok, Plongtong, Lacharoen, Laikitmongkol, Waenngoen, Sasithammawong, Arnunthana, Boromjate, Patarapal, Phungphan, Rungruang, Tawitayanont, Wisedsummapun, Leelertpanyakun, Tantanatipchai, Tanchaiswad, Atsawaprakarnkul, Atsawaprakrankul, Seehanat, Sittidech, Saisopha, Nonsena, Pochai, Tiammuang, Nantho, Hasodsong, Moonsan, Mokdara, Sopajan, Srisunt, Boonmar, Kawisuk, Thaweesuthivesh, Prajong, Promjun, Ruaksawatthavorn, Laopiam, Jongjit, Jeenngarm, Juntepa, Jitpaiboon, Thairat, Tepchai, Tepwong, Preecha, and Wanitchakijakachai