Saint-Oulph () is a commune in the Aube department in north-central France with the post code 10170.
Inhabitants of Saint-Oulph are known as Saint-Ulphiens or Saint-Ulphiennes.
The municipal population of Saint-Oluph was 287 as of 2017, with a population density of 26 inhabitants per kmò.
Saint-Oulph is located in the Grand Est region approximately a 2 hour and 15 minute drive South-East from Paris and is located on the East bank of the River Seine.