Regut is a village in the administrative district of Gmina Celestynów, within Otwock County, Masovian Voivodeship, in east-central Poland. It lies approximately south of Celestynów, south-east of Otwock, and south-east of Warsaw. It is close to National Road 50.
The village has an approximate population of 590. It is home to the sports club RKS Bór Regut. From 1975 to 1998 the village was in Warsaw Voivodeship, which is now part of Masovian Voivodeship.