Last name Tanyawat (ธัญวัฒน์ 
, ธันยวัฒน์ , Tanyawat 
) , in the entire world, is an extremely rare surname. The family name Tanyawat is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Tanyawat is the forename as well as the last name.
Lai, Kongchan, Keatsamshan, Pangputipong, Jantharo, Taweetong, Treamwattana, Nimkumpai, Yungyuen, Saptaweechai, Srisuchat, Chaiyakul, Benjaporn, Kaewplang, Keawwichit, Panusopit, Tachaboon, Thaitanyapanich, Kamalasniti, Vittayapalotai, Wittayakul, Patthanarak, Chootong, Arunekamolsri, Sopiskhunekhant, Sengviang, Suwan, Kanta, Kampa, Panya, Suctrong, Sepsuk, Khampa, Klahan, Namsai, Noimor, Sahasakmontri, Inklab, Sekekul, Chaisri, Kosutao, Klancoowat, Parkpian, Daraman, Tasuwan, Naksung, Saenphot, Suetrong, Siriket, and Pattarasiripong