HPP
- Allopurinol
- C++
- HPP epoxidase
- HPP model
- HTTP parameter pollution
- Handan East railway station
- Harrington Park Press
- Harris Performance Products
- Hawaiian Paradise Park
- Head Phones President
- Header file
- Health Partners Plans
- Hereditary pyropoikilocytosis
- High pressure processing
- Holme Pierrepont National Watersports Centre
- Human Proteome Project
- Hydroelectric power plant
- Hydrometallurgy Pilot Plant
- Hypokalemic periodic paralysis
- Hypophosphatasia
- Hypoxia preconditioned plasma