Krsy () is a municipality and village in Plzeà Â-North District in the Plzeà  Region of the Czech Republic. It has about 300 inhabitants.
Krsy lies approximately north-west of Plzeà  and west of Prague. The Tà Âemoà ¡ná River originates in the municipality.
Krsy consists of five municipal parts (in brackets population according to the 2021 census):