Saint-Léger-Vauban (French pronunciation: [sɛ̃ leʒe vobɑ̃]) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.

It lies within the Parc naturel régional du Morvan.

The town was originally named Saint Leger, then Saint-Léger-de-Fourcheret until 1867, when Napoleon III issued an Imperial decree renaming it Saint-Léger-de-Vauban, after the French military engineer Vauban, who was born there in 1633.

[4] Since 2021, a baroque and classical music festival has been held there on July [5] The church was restored in 1865 and has a functional bell tower.

Saint-Léger's primary economic activity is farming, though there are several small shops, a post office, school, and multiple cheese makers.