Saint-Ouen-sur-Seine is a commune in the northern suburbs of Paris, France, located 6.6 kilometres from the centre of Paris. It is part of th…Saint-Ouen-sur-Seine is a commune in the northern suburbs of Paris, France, located 6.6 kilometres from the centre of Paris. It is part of the Seine-Saint-Denis department, in the Île-de-France region, and of the Métropole du Grand Paris. The commune was called Saint-Ouen until 2018, when it obtained a change of name by ministerial order.