Lithuania can be divided into five historical and cultural regions. The exact borders are not fully clear, as the regions are not official political or administrative units. They are delimited by culture, such as country traditions, traditional lifestyle, songs, tales, etc. To some extent, regions correspond to the zones of Lithuanian language dialects. This correspondence, however, is by no means strict. For example, although the Dzūkian dialect is called South Aukštaitian, it does not mean that Dzūkija is part of Aukštaitija. In certain parts of some regions, dialects of other regions are spoken, while for example in Samogitia, there are three indigenous dialects, some of which are subdivided into subdialects.

Dzūkija or Dainava is one of five ethnographic regions of Lithuania. Dzūkija is a cultural region defined by traditional lifestyles and dialects of the local Lithuanian population and has never been defined as a political or administrative unit. Traditionally, Alytus is regarded as the capital of the region and largest city. Although Vilnius is surrounded by Dzūkija, the city itself is not considered as a part of any ethnographic region in most cases.