First recorded in the end of 19th century. From Ulrihs (“Ulric”), ultimately from Old High German. Name of a character in the play Pūt, vējini! (1913) by Rainis.
- A male given name.
- Klāvs Siliņš: Latviesu personvārdu vārdnīca. Riga "Zinātne" 1990, →ISBN
-  Population Register of Latvia: Uldis was the only given name of 7626 persons in Latvia on May 21st 2010.