Encyclopedias, Almanacs, Transcripts, and Maps
- Hasidism: Habad Hasidism
- Hasidism: Satmar Hasidism
- Hastings, James
- Hawaiian Honeycreepers (Drepanididae)
- Hawaiian Islands
- Hawaiian Religion
- hawfinch
- Hawks and Eagles (Accipitridae)
- Hawzah
- Hayashi Razan
- Haydon, A. Eustace
- Hayes, Denis Allen (1944 – ) American Environmental Activist and Earth Day Organizer
- Hazard Ranking System
- Hazardous Material
- Hazardous Substances Act (1960)
- Hazardous Waste Site Remediation
- Hazardous Waste Siting
- Head: Symbolism and Ritual Use
- Head: The Celtic Head Cult
- Healing and Medicine