Onomastics or onomatology is the study of the etymology, history, and use of proper names.[1] An orthonym is the proper name of the object in question, the object of onomastic study.

Onomastics can be helpful in data mining, with applications such as named-entity recognition, or recognition of the origin of names.[2][3] It has also been used in historical research to identify ethnic minorities within wider populations.[4][5]