Collège Saint-Stanislas is a mixed Catholic secondary school in Mons, Belgium.

Despite some disruption during the two world wars, the college has continued to have classes over the entire course of its history.

After the restoration of the Society of Jesus and the independence of Belgium the Jesuits came to Mons in 1840 and worked on what is now Rue de Fétis.

[2] During the Second World War and the German invasion of Belgium in 1940, the college welcomed refugees and when the city was bombarded, the Jesuit community lived in the cellar, said Mass in the basement, but the buildings survived and were not damaged.

While the city was occupied by German forces, classes continued and were fully subscribed during term time.