Saint-Germain-lès-Arpajon (French pronunciation: [sɛ̃ ʒɛʁmɛ̃ lɛ.z‿aʁpaʒɔ̃] ^ⓘ, literally Saint-Germain near Arpajon) is a commune in the Essonne department. It is a suburb of Paris located 30 km (19 mi) south of Paris via the N20, and 20 km (12 mi) north of Étampes.

• Corbinian founded a religious community in the 7th century
• Up into the 13th century, Saint-Germain was a dependence of the châtellenie of Montlhéry
• In the 16th century, Saint-Germain was an estate of the lords of Granville
• In the 18th century, it was an estate of the lords of Noailles
• In 1720, the commune takes its current name following the acquisition of the commune of Châtres by Louis de Severac, Marquis d' Arpajon-sur-Cère (father of Anne d'Arpajon, comtesse de Noailles). It was previously called Saint-Germain-lès-Châtres).

Its inhabitants are called Germinois.

• Communes of the Essonne department

• Official website (in French)
• Base Mérimée: Search for heritage in the commune, Ministère français de la Culture. (in French)
• Mayors of Essonne Association (in French)