Its seat is the village of Przewóz, which lies approximately 22 kilometres (14 mi) south-west of Żary and 64 km (40 mi) south-west of Zielona Góra.

The gmina covers an area of 178.32 square kilometres (68.8 sq mi), and as of 2019 its total population is 3,157.

The gmina contains part of the protected area called Muskau Bend Landscape Park.

Gmina Przewóz contains the villages and settlements of Bucze, Dąbrowa Łużycka, Dobrochów, Dobrzyń, Jamno, Lipna, Mała Lipna, Mielno, Piotrów, Potok, Przewóz, Sanice, Sobolice, Straszów and Włochów.

In the second half of the 13th century, Przewóz was in the Duchy of Żagań, from 1303 to 1319 it was owned by the House of Ascania from Brandenburg, then under Polish rule within the borders of Lower Silesia as part of the duchies of Jawor and Żagań.