Boinville-en-Mantois () is a commune in the Yvelines department in north-central France.
Boinville-en-Mantois is located 8 km south-east of Mantes-la-Jolie in the (a ) at an approximate altitude of 135m.
The commune is bordered by Mézières-sur-Seine and Guerville from the north, Goussonville from the east and by Arnouville-lès-Mantes from the south-west.