Surname Udalkin (Udalkin 
, Удалкин 
) , all around the world, is a rare last name. The surname Udalkin is habitual in Russia, where it is a rare surname, Kazakhstan, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Udalkin | Russia, United States |
| Удалкин | Kazakhstan, Russia |
| ruslan a. udalkin chess player (b. 1973) |
|