thumb|Map of the dialects of the Lithuanian language (Zinkevičius and Girdenis, 1965)
The Dzūkian dialect (), known in academic works as Southern Aukštaitian dialect (), is one of the three main sub-dialects of the Aukštaitian dialect of Lithuanian language. Dzūkian dialect is spoken in Dzūkija, southern Lithuania. Its most distinctive feature is replacing t, d before i, į, y, ie and č, dž with c and dz ( instead of – just, instead of – size, instead of – to braid, instead of – guests). Another notable feature is the lengthening of vowels in closed syllables ending in sonorants, for example: tìltas (bridge) becomes tyltas, bùlvė (potato) - būlvė, or pìrmas (first) - pyrmas. Since the region borders Slavic lands, the dialect has many Slavic loanwords and barbarisms.