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- William Habington - English poet (St. Omer College, Belgium)
- Carter Ham - General, United States Army; Commanding General, U.S. Army, Europe (John Carroll University)
- Howard W. "Hoddy" Hanna, III - Chairman and CEO of Howard Hanna Real Estate Services Inc. (John Carroll University)
- Michael Harrington - Harvard professor, political activist and author (St. Louis University High School and College of the Holy Cross)
- Jonathan Harris - actor, best known for his TV work as Bradford Webster in The Third Man and Dr. Zachary Smith in Lost in Space (Fordham University)
- Richard Harris - Irish actor (Crescent College, Limerick, Ireland)
- Joseph E. Hasten - American banker, CEO of Shorebank (Fairfield University)
- Francis Hawkins SJ - Jesuit, child prodigy and translator (College of St. Omer)
- Salma Hayek - Mexican actress (Universidad Iberoamericana)
- Martin Heidegger - German philosopher (Freiburg Jesuit Seminary)
- Roberto Hernández RamÃrez - President of Banamex and Member of the Board Citibank (Universidad Iberoamericana)
- Mary Higgins Clark - American writer (Fordham University, Bronx, New York)
- Alfred Hitchcock - British film director (St Ignatius' College, Stamford Hill, N15; relocated to Enfield, Middlesex in the 1960s)
- Morihiro Hosokawa - Japanese politician (Sophia University)
- Robert Hughes - Australian art critic, writer and television documentary maker (St Ignatius' College, Riverview in Sydney)
- Vicente Huidobro - Chilean poet
- David Hume - Scottish philosopher, economist, and historian (Jesuit seminary at La Fleche)
- Saint Alberto Hurtado - Chilean priest and saint, founded the Chilean Trade Union Association
- Zakir Hussain - Indian musician (St. Xavier's College, Mumbai)
- Henry Hyde - American politician (Georgetown University Loyola University Chicago)
- Dan Hynes - American politician (St. Ignatius College Prep, Chicago, Illinois)
Read more about this topic: List Of Alumni Of Jesuit Educational Institutions