Cognomen Датт (Datt 
, Dutt , Датт 
) , across the world, is a widespread last name. The surname Датт is habitual in Fiji, where it is a common surname, Bermuda, where it is quite a common surname, and India. Measured by absolute frequency, it most frequently occurs in India, Fiji, and the United States. Much less frequently, Датт is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dutt, Datt | Bangladesh, Indonesia, Fiji, United States, India |
| Датт | Ukraine, Russia |