Gmina Tuczna is a rural gmina (administrative district) in Biała Podlaska County, Lublin Voivodeship, in eastern Poland. Its seat is the village of Tuczna, which lies approximately south-east of Biała Podlaska and north-east of the regional capital Lublin.
The gmina covers an area of , and as of 2006 its total population is 3,507 (3,246 in 2014).
Villages
Gmina Tuczna contains the villages and settlements of Bokinka Królewska, Bokinka Pańska, Choroszczynka, Dąbrowica Duża, Kalichowszczyzna, Leniuszki, Matiaszówka, Mazanówka, Międzyleś, Ogrodniki, Rozbitówka, Tuczna, Wiski, Władysławów, Wólka Zabłocka, Wólka Zabłocka-Kolonia and Żuki.
Neighbouring gminas
Gmina Tuczna is bordered by the gminas of Hanna, Kodeń, Łomazy, Piszczac, Sławatycze and Sosnówka.