Last name Ядвіга-Казимира (Ядвіга-Казимира 
) , in the world, is an extremely rare family name. Much more frequently, Ядвіга-Казимира is the forename as well as the last name. Parts of the name also exists independently as a first name Ядвіга, and a first name Казимира.
| VARIANT | COUNTRY |
|---|---|
| Ядвіга-Казимира | Ukraine |