Family name Уллас (Уллас 
) , all over the world, is a very rare cognomen. The surname Уллас is characteristic of Eastern Europe, particularly Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Уллас | Russia |
| уллас, николай николаевич Soviet architect (1914-2009), RU (b. 1914) |
|