HPA

HPA may refer to:

Organizations

• Halifax Port Authority, a port authority in Canada
• Hamburg Port Authority, the port authority for the Port of Hamburg, Germany
• Health Protection Agency, a health organization in the United Kingdom
• Hurlingham Polo Association, the governing body for polo in the UK
• Hawaii Paragliding Association, a local chapter of the United States Hang Gliding and Paragliding Association on O'ahu in Hawaii, USA

People

• H. Peter Anvin, often abbreviated hpa, computer programmer and Linux hacker

Science

• Hectopascal (hPa), a unit of pressure equivalent to about 1/1000 of 1 atmosphere
• Hypothalamic-pituitary-adrenal axis in physiology, regulation of hormone levels and maintaining homeostasis
• Human physical appearance, in anthropology
• Human platelet antigens, in clinical medicine, blood transfusion, alloantigens
• Heteropoly acid, often used as an acidic catalyst

Technology

• High-Performance Addressing, a passive-matrix LCD display technology
• High Power Amplifier, part of the transceiver in two-way satellite dishes
• Host Protected Area, a reserved and hidden area on computer data storage
• Human-powered aircraft
• High Pressure Air, gas propulsion in paintball guns

See also

• All pages beginning with "HPA"
• All pages with titles containing "HPA"