Worldwide, Janthai (Janthai 
) is an extremely rare unisex forename. More prevalently, Janthai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Janthai | Switzerland, Colombia, Thailand, United States, India |
Mr, Sudathip, Anchalee, Akarawit, Kunyapat, Pissamai, Rodchana, Thararat, Teerapan, Wilaiwan, Weerayut, Sathaporn, Suphannee, Kamonphan, Khanthong, Lucksamee, Nattikarn, Napasawan, Wongtawan, Wutthinan, Saengrawee, Pornprasit, Supannee, Pitchayapa, Morrakot, Wannapa, Sunee, Ramon, Wirut, Sathit, Sutouch, Sriwan, Buppha, Piphat, Jantee, Jariya, Jomjai, Wasana, Wiriya, Yodrak, Saranya, Supansa, Kanitta, Krisana, Kruawan, Pongpat, Viripol, Ubonrat, and Thawatchai