[2] Until 2019, Saint-Quentin-en-Yvelines served as the start and finish point of the famous Paris–Brest–Paris bicycling endurance event.

Europcar has its head office in the business park of Val Saint-Quentin at Voisins-le-Bretonneux.

[5] It previously had its head office in the Immeuble Les Quadrants in Saint-Quentin-en-Yvelines.

[6] At one time Bouygues had its head office in the Kevin Roche-designed Challenger complex in Saint-Quentin-en-Yvelines.

[10] Universities: Senior high schools/sixth form colleges: International schools: Media related to Saint-Quentin-en-Yvelines at Wikimedia Commons