Across the world, Ruthaiwan (Ruthaiwan 
) is a very rare feminine forename. The forename Ruthaiwan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare girly name.
Jones, Kongcharoen, Suwannasan, Thongmark, Pochanapimol, Bunkrongcheap, Sawasraksa, Yoktawon, Tantunaudom, Kitisomkiat, Khaoneam, Kesronthong, Arsairat, Srisuwan, Sonwiset, Vorakun, Vorakul, Ruechai, Sekine, Sinvad, Laohaviriyanont, and Suwannakinthorn