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- Hadden, Jeffrey K.
- Hagee, John
- Hagin, Kenneth
- Haj
- Hajj
- Hallelujah Diet
- Halloween
- Hamas
- Hanegraaff, Hank
- Hard To Receive
- Hardy, Barry
- Hare Krishna
- Harmony Worship Center Church
- Hassan, Steve
- Hate Groups
- Hausherr, Tilman
- Hawkins, Craig
- Hawkins, Yisrayl "Bill"
- Hayford, Jack
- Head Covering
- Healing
- Healing – Alternative
- Healing – Inner
- Healing of Memories
- "Healing Spiritual Abuse"
- Health and Wealth Gospel
- Heaven’s Gate
- Heaven’s Gathering
- Heaven’s Magic
- Hebrew Israelites, (Black)
- Heflin, Ruth Ward
- Heifer, Red
- Hein, Anton and Janet (Janet and Anton Hein)
- Hell, doctrine of
- Heresy
- Heretical
- Heterodox
- Hexham, Irving
- Hickey, Marilyn (Marilyn Hickey)
- Hidden Manna
- Hills, Steve
- Hillsong Church
- Hinduism
- Hinckley, Gordon B.
- Hinn, Benny
- Hinn, Sam
- History of the Jesus People
- Hitchens, Christopher (Christopher Hitchens)
- Hizb ut-Tahrir
- Hoaxes
- Ho No Hana Sanpogyo
- Holocaust
- Holocaust Deniers
- Holy Laughter
- Holy Spirit
- Holy Spirit Movement
- Holy Trinity Brompton
- Holyland
- Homeopathy
- Homosexuality
- Hong, Nansook
- Hongzhi, Li
- Honsberger, Bill
- HOPE WorldWide
- Hornbuckle, Terry | Terry Hornbuckle
- Horned God
- House, Dr. H. Wayne
- House of David
- House of Prayer
- House of Prayer (Atlanta, Georgia)
- House of Yahweh
- Howard, Jay
- Howard-Browne, Rodney
- Howell, Vernon
- Hoyu-no-kai
- HTB
- Hubbard, Lafayette Ron
- Humanism
- Human Rights Without Frontiers
- Hunt, Dave
- Hunter, Bob
- Hunter, Charles and Frances
- Hurnard, Hannah
- Hutchinson, Janis
- Hutterites
- Hyde Park Christian Fellowship
- Hylozoism