Czajków [ˈt͡ʂai̯kuf] is a village in the administrative district of Gmina Wodynie, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) north-east of Wodynie, 20 km (12 mi) south-west of Siedlce, and 72 km (45 mi) east of Warsaw.