The Ignatian Solidarity Network (ISN) is a national social justice networking, education and advocacy organization animated by the spirituality of St. Ignatius of Loyola and the witness of the Jesuit martyrs of El Salvador and their companions. ISN was founded in 2004 and is a lay-led 501(c)3 organization working in partnership with over 80 Jesuit universities, high schools, and parishes, along with many other Catholic institutions and social justice partners.