Cygów [ˈt͡sɨɡuf] is a village in the administrative district of Gmina Poświętne, within Wołomin County, Masovian Voivodeship, in east-central Poland.

It became a parish in the mid 15th century when the Ronczajski, a local landowning family, erected a wooden church there and saw it integrated into the diocese of Płock.

By the mid 18th century, a courtier of King August III, one Dysmas Szymanowski acquired Cygów and a swath of forest and agricultural land containing a number of neighbouring villages, including Poświętne and turned it into his estate.

The reason for the disappearance of Cygów as a gmina is tied up with the declining economic and political fortunes of the Polish nation in the Russian partition and the terrible toll it exacted from many leading families.

The family, for by then Teodor was married with children, became virtually destitute and sought a new life close to the wife's kin in the East, in Western Ukraine.