Katholieke Studentenvereniging Sanctus Virgilius Delft

KSV (Dutch: Katholieke Studenten Vereniging, English: Catholic Student Society) Sanctus Virgilius (also known as Virgiel) is the largest student fraternity/sorority in Delft, named after the Irish born astronomer, geometer and bishop Saint Virgil.

A wide variety of sports and cultural events are organized by members of Virgiel, including football, field hockey, rugby and climbing.

Catholicism had long been repressed by government policy, and Delft Catholic students wanted to unite to discuss their faith and position in society.

At the time, most members also belonged to the Delftsch Studenten Corps [nl], the oldest student fraternity/sorority in town.

Virgiel is now a non-faith-based fraternity/sorority, which is primarily aimed at having a good time while also expanding knowledge and views outside class-hours.