- natural gas well completion string
- natural generalization
- Natural genetically modified
- natural geometry
- Natural Goodness
- natural gradient
- natural graphene
- natural grassland
- natural grassland resources of China
- natural guide star
- natural half-width
- natural halloysite nanotubes
- natural harmony of yin-yang
- natural harmony system
- natural hazard in grasslands caused by poisonous herbaceous plants
- natural heritage
- natural heritage resources of China
- natural history exhibition
- Natural History Museum
- natural history museum
- Natural History Museum of Guangxi Zhuang Autonomous Region
- Natural History Museum of Zimbabwe
- natural history of disease
- natural homomorphism
- natural human computer interaction