Siena College is an independent Roman Catholic liberal arts college in Loudonville, Albany County, New York, United States. Siena is a four-year, coeducational, independent college in the Franciscan tradition, founded by the Order of Friars Minor, in 1937. It has 3,000 full-time students and offers undergraduate degrees in business, liberal arts, and sciences.The college was named after Saint Bernardino of Siena, a 15th-century Italian Franciscan friar and preacher. St.