Surname Bartmanis (Bartmanis 
) , throughout the world, is a very rare last name. The cognomen Bartmanis is characteristic of Latvia, where it is a rare surname, Croatia, where it is a very rare surname, and the United Kingdom. Measured by absolute frequency, it is the most numerous in Latvia, the United Kingdom, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Bartmanis | United Kingdom, United States, Latvia, Croatia |