HPA

• Autoscaling
• HPA Toucan
• Halifax Port Authority
• Hamburg Port Authority
• Hans Peter Anvin
• Harry Potter Alliance
• Hawaii Preparatory Academy
• Health Practice Associates Council
• Health Protection Agency
• Hectopascal
• Heerespersonalamt
• Heteropoly acid
• Hierarchical Pathfinding A*
• High Priest of Amun
• High-performance addressing
• High-power amplifier
• High-pressure air
• Highland Prince Academy de Mexico
• Hollywood Post Alliance
• Host protected area
• Human Protein Atlas
• Human physical appearance
• Human platelet antigen
• Human-powered aircraft
• Hurlingham Polo Association
• Hydrogen pinch analysis
• Hypothalamic–pituitary–adrenal axis
• Islamic Education Institute of Texas
• Lifuka Island Airport
• Pathfinding
• Pelle Almqvist
• The Hives