Lithuania is a country.
The Baltic states , also known as the Baltic countries , Baltic republics , Baltic nations , or simply , the Baltics ( Balti riigid , Baltimaad , Baltijas valstis , Baltijos valstybės ) , are the three countries in northern Europe on the eastern coast of the Baltic Sea : Estonia , Latvia and Lithuania . Lithuania ( UK and US : [ lɪθuː ` eɪniə ] , Lietuva [ lʲɪɛtʊˈvɐ ] ) , officially the Republic of Lithuania ( [ Lietuvos Respublika , links = no ] ) , is a country in Northern Europe . One of the three Baltic states , it is situated along the southeastern shore of the Baltic Sea , to the east of Sweden and Denmark . During the 14th century , the Grand Duchy of Lithuania was the largest country in Europe ; present-day Lithuania , Belarus , Ukraine , and parts of Poland and Russia were the territories of the Grand Duchy .