Cognomen สุนิฐา (Sunitha 
, สุนิฐา 
) , in the world, is a common surname. The cognomen สุนิฐา is habitual in Kuwait, where it is quite a rare surname, India, and Oman. Not in comparison with a country's population, it is commonest in India, Kuwait, and Saudi Arabia. More prevalently, สุนิฐา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sunitha | Kuwait, South Africa, United Arab Emirates, United States, India |
| สุนิฐา | Thailand |