Surname Duttu (Duttu 
) , all over the world, is a rare cognomen. The cognomen Duttu is characteristic of Tanzania, where it is a rare surname, Ethiopia, where it is a very rare surname, and Turkey. Measured by absolute frequency, it is the most numerous in Tanzania, Ethiopia, and India. Much less frequently, Duttu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duttu | Tanzania, Nigeria, Ethiopia, Turkey, India |