St Benildus College is an all-boys, Catholic secondary school located in Stillorgan, Dublin, Ireland. Established in 1966, the college was named after the De La Salle Saint, Brother Benildus of Clermont-Ferrand, France. As of 2023, there were over 880 students at the school. It is located on the Upper Kilmacud Road in South Dublin on a 25-acre site. The Luas green line runs close to school, and the Kilmacud stop is at the back of the school.

Stillorgan, formerly a village in its own right, is now a suburban area of Dublin in Ireland. Stillorgan is located in Dún Laoghaire–Rathdown, and contains many housing estates, shops and other facilities, with the old village centre still present. Stillorgan is at least partly contiguous with Kilmacud and neighbours other southside districts such as Mount Merrion, Sandyford, Leopardstown, Dundrum, Blackrock, Goatstown and Foxrock.