- Head-Smashed-In Buffalo Jump
- heads-of-states conference in Pre-Qin period
- headspace gas chromatography
- headspace gas chromatography (HSGC)
- headspace gas chromatography (HSGS)
- headspace sampling
- headspace technology
- head spacing
- headstand projection
- head start project
- headstock
- head sweating
- head-tail galaxy
- head-tail radio galaxy
- head-tail structure
- head tax
- head tower
- head unloading zone
- head-up display
- headward erosion
- head wave
- headway
- headword
- Headwork of Zhengguo Canal
- healant