Cognomen דוויט (Devlet 
, Dewitt 
, Devitt 
) , all over the world, is a common last name. The family name דוויט is habitual in Ireland, where it is quite a common surname, the United States, where it is quite a rare surname, and Canada. Measured by absolute frequency, it is commonest in the United States, Canada, and the United Kingdom. Very seldom, דוויט is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Devlet | United Kingdom, Germany, Australia, United States, Turkey |
| Dewitt | United Kingdom, Australia, Canada, United States, Malaysia |
| Devitt | United Kingdom, Australia, Canada, United States, Ireland |
| דוויט | Israel |