Bartkus
Bartkus is the masculine form of a Lithuanian family name. Its feminine forms  are: Bartkuvienė (married woman or widow) and Bartkutė (unmarried woman). The (masculine) name is derived from a diminutive fo the gioven name Bartolomejus - Bartholomew. The surname may refer to:

Džiugas Bartkus
Frank Bartkus (1915-1986), a U.S. soccer goalkeeper 
Gintautas Bartkus (b. 1966), Lithuanian lawyer, Justice minister
Petras Bartkus, Lithuanian anti-Soviet par5tizan
Ray Bartkus (b. 1961) is a Lithuanian artist
Vitalija Bartkuvienė  (1939-1966), Lithuanian painter

See also

 Bartkus v. Illinois, is a decision of the U.S. Supreme Court, 1959. Lithuanian-language surnames