Huby-Saint-Leu (French pronunciation: [ybi sɛ̃ lø]) is a former commune in the Pas-de-Calais department in the Hauts-de-France region of France.

[3] Huby-Saint-Leu lies to the north of Hesdin, and is not much more than a suburb of that town.

The D928 road to Saint-Omer passes nearby.

A military base during World War One.

This Pas-de-Calais geographical article is a stub.