Gmina Nielisz is a rural gmina (administrative district) in Zamość County, Lublin Voivodeship, in eastern Poland. Its seat is the village of Nielisz, which lies approximately north-west of Zamość and south-east of the regional capital Lublin.
The gmina covers an area of , and as of 2006 its total population is 6,025 (5,723 in 2013).
Villages
Gmina Nielisz contains the villages and settlements of Deszkowice-Kolonia, Gościniec, Grobla, Gruszka Duża, Gruszka Duża-Kolonia, Gruszka Mała Druga, Gruszka Mała Pierwsza, Kolonia Emska, Krzak, Las, Nawóz, Nielisz, Niwa, Poprzeczka, Ruskie Piaski, Średnie Duże, Średnie Małe, Staw Noakowski, Staw Noakowski-Kolonia, Staw Ujazdowski, Staw Ujazdowski-Kolonia, Ujazdów, Wólka Nieliska, Wólka Złojecka, Zamszany, Zarudzie and Złojec.
Neighbouring gminas
Gmina Nielisz is bordered by the gminas of Izbica, Rudnik, Stary Zamość, Sułów, Szczebrzeszyn and Zamość.