Human Life International (HLI) is an American-based Roman Catholic activist anti-abortion organization. It describes itself as "the largest international pro-life organization in the world", noting that it has affiliates and associates in over 80 nations worldwide and has sent representatives to approximately 160. It has been based in Front Royal, Virginia since 1996.
Human Life International was established in 1981 in Gaithersburg, Maryland by Paul Marx, as a continuation of the Human Life Center founded by Marx at Saint John's University, Minnesota in 1972. Its mission is to train, organize and equip anti-abortion movement leaders - priests, crisis pregnancy centers, civic leaders, radio and television programmers, and family counselors. HLI bases its activism on to Catholic anti-abortion beliefs, which propose that life begins at conception. It also promotes itself as a pioneer in anti-contraception advocacy.