Cognomen ธิถา (Thitha 
, ธิถา ) , all over the world, is a rare surname. The surname ธิถา is habitual in Myanmar, where it is a rare surname, Thailand, and South Africa, where it is a very rare surname. Likewise, ธิถา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thitha | Indonesia, South Africa, Thailand, India, Myanmar |
| ธิถา | Thailand |