Cognomen ระหัด (Rahat 
, ระหัด 
) , around the globe, is a common last name. The last name ระหัด is habitual in Bangladesh, where it is quite a common surname, Oman, where it is quite a rare surname, and Qatar. Measured by absolute frequency, this name is the most popular in Southern Asia, particularly Bangladesh, Pakistan, and India. More frequently, ระหัด is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rahat | Bangladesh, Pakistan, India, Saudi Arabia, Turkey |
| ระหัด | Thailand |