Rajsko [ˈrai̯skɔ] is a village in the administrative district of Gmina Mstów, within Częstochowa County, Silesian Voivodeship, in southern Poland. It lies approximately 2 kilometres (1 mi) south-east of Mstów, 14 km (9 mi) east of Częstochowa, and 67 km (42 mi) north of the regional capital Katowice.