Breg pri Ribnici na Dolenjskem was attested in written sources as Williginrain in 1241 and Willigem Rain in 1340, among other spellings. The name of the settlement was changed from Breg to Breg pri Ribnici na Dolenjskem in 1953.Spremembe naselij 1948–95. 1996. Database. Ljubljana: Geografski inštitut ZRC SAZU, DZS. In the past the German name was Willingrain.
