Encyclopedias, Almanacs, Transcripts, and Maps
- Healing and Medicine: Healing and Medicine in Tibet
- Healing and Medicine: Popular Healing Practices in Middle Eastern Cultures
- Health and Religion
- Health and Safety Commission
- Health, UK Department of
- Healthy, Happy, Holy Organization (3HO)
- Heat & Humidity
- Heat (Stress) Index
- Heat Pumps
- Heaviside, Oliver (1850–1925)
- heavy metal
- Heavy Metals and Heavy Metal Poisoning
- Heavy Metals Precipitation
- Hedge Sparrows (Prunellidae)
- Hedgehogs
- Hegel, G. W. F.
- Heilbroner, Robert Louis (1919 – ) American Economist and Author
- Heiler, Friedrich
- Heimdallr
- Hejira