Cognomen สะดา (Sada 
, สะดา 
) , globally, is a widespread family name. The cognomen สะดา is characteristic of Qatar, where it is a common surname, Nepal, where it is quite a common surname, and India (explore the name in all countries). In absolute terms, it is the most numerous in India, Nigeria, and Nepal. Much less frequently, สะดา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sada | Nigeria, Japan, India, Tanzania, Nepal |
| สะดา | Thailand |