Encyclopedias, Almanacs, Transcripts, and Maps
- Hominidae I (Great Apes)
- Hominidae II (Humans)
- Homo habilis
- Homo Religiosus
- Homosexuality
- homozygote
- Honey Possums (Tarsipedidae)
- Honeyguides (Indicatoridae)
- Honjisuijaku
- Honko, Lauri
- Honthorst, Gerard
- Hoopoes (Upupidae)
- Hopkins, Emma Curtis
- Hornbills (Bucerotidae)
- Horner, I. B.
- Horns
- Horses, Zebras, and Asses (Equidae)
- Horseshoe Bats (Rhinolophidae)
- Horseshoe Crabs
- Horthy, Miklós Nagybánai