Glossary of pre-Christian Lithuanian names

A number of Lithuanian surnames evolved from the ancient pre-Christian Lithuanian personal names, such as Budrys, Girdenis, Tylenis, Vilkas, Amantas, Bukantas, Rimgaila, Vizgirda, Tarvydas. Many of them are of compound type, typically consisting of two stems (dithematic names), and many are of single stem. Sometimes the order of these stems may reverse, e.g., Norvaišas vs. Vaišnoras, Tautvydas vs. Vytautas.

Some two-stemmed names have a clear etymology, arising from nicknames, such as Baltakis = Balt-akys = "White eyes". Alfred Senn suggests that such transparent names are less ancient development, while those with non-evident etymology originate from the Indo-European pra-language.

A two-stemmed name may be further compounded into a patronymic cognomen/surname: Algirdas—Algirdaitis (son of Algirdas; see Lithuanian names of Vladimir Olgerdovich, Andrei of Polotsk, Dmitry of Bryansk), Žygimantas—Žygimantaitis.

Much of this glossary of stems common in ancient Lithuanian names is based on Dictionary of Lithuanian Surnames, searchable online in the Lithuanian Surname Database (LSD).