Surname Natthanai (Natthanai 
) , in the entire world, is an extremely rare cognomen. Much more frequently, Natthanai is the forename as well as the last name.
Sopab, Ngaothamatat, Ngaothamatasn, Ngaothammatat, Thareesueb, Butsayakul, Chitbanthao, Pitakuldilok, Prasannam, Chaichana, Sitthilor, Wutthanu, Wiangnil, Saisuwan, Weingnil, Jainual, Khaodam, Kaewluk, Chunpleng, Sitthil, Surachaisitthichok, and Rattanawichit