St Mary's Knockbeg College is a Roman Catholic, all-boys secondary school located on the Laois/Carlow border in Ireland, approximately 3 km from both Carlow town and Graiguecullen, County Laois. A former seminary school for the diocese of Kildare and Leighlin, it was founded in 1793. Exclusively a boarding school until the 1980s, it now accommodates only day-pupils; the boarding school having closed down in June 2011. Knockbeg College celebrated its bicentenary in 1993.