Gmina Chełmek is an urban-rural gmina (administrative district) in Oświęcim County, Lesser Poland Voivodeship, in southern Poland.

Its seat is the town of Chełmek, which lies approximately 8 kilometres (5 mi) north of Oświęcim and 50 km (31 mi) west of the regional capital Kraków.

The gmina covers an area of 27.24 sq.km2 (27240000 sq.

Apart from the town of Chełmek, Gmina Chełmek contains the villages of Bobrek and Gorzów.

Gmina Chełmek is bordered by the towns of Bieruń, Imielin, Jaworzno and Oświęcim, and by the gminas of Chełm Śląski, Libiąż and Oświęcim.