Encyclopedias, Almanacs, Transcripts, and Maps
- hexagon
- Hexanchiformes (Six- and Sevengill Sharks)
- Hierodouleia
- Hierophany
- Hieros Gamos
- High Court of Justice
- high-definition television
- High-Grading (Mining, Forestry)
- high-level language
- High-Level Radioactive Waste
- High-Solids Reactor
- highest mountains
- highest waterfalls
- Hijiri
- Hildesheimer, Esriel
- Hill, Graham
- Hincmar
- Hindi Religious Traditions
- Hindu Religious Year
- Hindu Tantric Literature