Surname Stulgis (Stulgis 
) , around the world, is a rare cognomen. The last name Stulgis is habitual in Lithuania, where it is quite a rare surname, Luxembourg, and North Macedonia, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Poland, Lithuania, and the United States. Likewise, Stulgis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stulgis | Poland, Latvia, Lithuania, United States, North Macedonia |