Fulbert of Chartres was the Bishop of Chartres from 1006 to 1028 and a teacher at the Cathedral school there. Fulbert was a pupil of Gerbert of Aurillac, who would later become Pope Sylvester II. He was responsible for the advancement of the Nativity of the Virgin's feast day on September 8 and for one of the many reconstructions of the Chartres Cathedral. Most of the information available about him comes from letters he wrote to secular and religious figures between 1004 and 1028.

Chartres Cathedral, also known as the Cathedral of Our Lady of Chartres, is a Catholic church in Chartres, France, about 80 km southwest of Paris, and is the seat of the Bishop of Chartres. Mostly constructed between 1194 and 1220, it stands on the site of at least five cathedrals that have occupied the site since the Diocese of Chartres was formed as an episcopal see in the 4th century. It is one of the best-known and most influential examples of High Gothic and Classic Gothic architecture, It stands on Romanesque basements, while its north spire is more recent (1507–1513) and is built in the more ornate Flamboyant style.