Poświętne is a village in Wołomin County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Poświętne. It lies approximately 14 km east of Wołomin and 33 km north-east of Warsaw. It became a gmina in place of Cygów gmina and parish with its council, at the very end of the XIXth c., after the manor of Cygów was demolished and the estate auctioned off during Russian rule.