Benthuizen is a village in the Dutch province of South Holland.

It is a part of the municipality of Alphen aan den Rijn and lies about 1 km east of Zoetermeer.

[3] Benthuizen developed as a peat excavation settlement in the Late Middle Ages.

In 1993 the name was changed to Rijnwoude, and in 2014 it became part of Alphen aan den Rijn.

[3] The HSL-Zuid being constructed passes Benthuizen on the eastern side.