- Heparin
- Herbaceous
- Herbicides
- Hetero
- Heterocyclic
- Heterocyclic Compounds
- Hh
- Hide
- High Performance
- High Speed
- High Speed Steel
- High Tenacity
- High Tenacity Yarn
- Hinges
- Hoist
- Hoists
- Holders
- Hollow
- Honey
- Hoods
- Hooks
- Hoop
- Hopper
- Horizontal Machining
- Horse
- Horse Mackerel
- Horticulture
- Hose
- Hoses
- Hosiery
- Hospital
- Hot Rolled
- Household
- Household Art
- Housing
- Human Hair
- Hunting
- Hydraulic
- Hydraulic Brake
- Hydraulic Jacks
- Hydraulic Motors
- Hydraulic Power
- Hydrazine
- Hydro
- Hydrocarbon
- Hydrocarbons
- Hydrochloric
- Hydrochloric Acid
- Hydrocortisone
- Hydrogen