Surname Mikucauskas (Mikucauskas 
) , around the world, is a very rare cognomen. The cognomen Mikucauskas is habitual in Lithuania, where it is a rare surname, Norway, where it is a very rare surname, and Argentina. In absolute terms, this name is the most popular in Lithuania, Argentina, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Mikucauskas | Lithuania, Norway, United States, Argentina |