Surname Udono (Udono 
) , in all the world, is a very rare cognomen. The last name Udono is habitual in Denmark, where it is a very rare surname, Nigeria, and Australia. Also, Udono is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udono | Australia, Nigeria, Tanzania, Denmark, Brazil |
| heiichiro udono researcher |
|