Osny is located in Paris city, France at the 49.0594, 2.0618 coordinates. Distance from Osny to other cities. are listed below, click on the city name to find distance between. Distance from Osny to Cergy-Pontoise 3 km, to Saint-Quentin-en-Yvelines 32 km, to Boulogne-Billancourt 29 km. The green marker indicates the location of Osny.