Villaines-sous-Bois (French pronunciation: [vilɛn su bwa] ⓘ) is a commune in the Val-d'Oise department in Île-de-France in northern France.

Villaines station has rail connections to Luzarches, Sarcelles and Paris.

The average annual rainfall is 709.7 mm (27.94 in) with December as the wettest month.

The temperatures are highest on average in August, at around 19.2 °C (66.6 °F), and lowest in January, at around 4.0 °C (39.2 °F).

This Val-d'Oise geographical article is a stub.