Gmina Ornontowice is a rural gmina (administrative district) in Mikoà Âów County, Silesian Voivodeship, in southern Poland. Its seat is the village of Ornontowice, which lies approximately west of Mikoà Âów and south-west of the regional capital Katowice.
The gmina covers an area of , and as of 2019 its total population is 6,134.
Gmina Ornontowice is bordered by the towns of Mikoà Âów and Orzesze, and by the gminas of Czerwionka-Leszczyny and Gieraà Âtowice.