In the entire world, Thathiah (Thathiah 
) is an extremely rare male forename. Much more prevalently, Thathiah is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thathiah | Mauritius, South Africa, Malaysia, Australia, United States |
Ms, Feona, Ovind, Marcel, Malati, Melvin, Selvan, Seshni, Soraya, Sooren, Emily, Swella, Kamini, Keshan, Keshni, Denesh, Denzel, Dushen, Dhuven, Jairaj, Justin, Alyson, Thelin, Erica, Dasen, Jan, Viv, Mala, Kamy, Prea, Daya, Noel, Neil, Mayen, Tanya, Sandy, Steve, Aruna, Bunny, Kajal, Kuben, Puren, Rinku, Delan, David, Sajen, and Neelan