Breg pri Borovnici was attested in historical sources as Rippa juxta Pach in 1299. The name of the settlement was changed from Breg to Breg pri Borovnici in 1955. The toponym Breg is common in Slovenia and is derived from the common nounbreg ' bank, slope', but may also refer to creeks and other running water; in this case, Borovniščica Creek runs through Breg pri Borovnici.