| HPA | high-power amplifier | 高功率放大器 |
| HPA | High order path Adaptation | 高阶适配 |
| HPA | Hawaii Psychological Association | 夏威夷心理协会 |
| HPA | HomePlug Powerline Alliance | 家庭插电联盟 |
| HPA | Illinois Historic Preservation Agency | 伊利诺伊州历史保护局 |
| HPA | Head of Processing Activity | 加工活动负责人 |
| HPA | Health Policy Authority | 卫生政策局 |
| HPA | high specific activity | 高比活性 |
| HPA | Hydraulic Power Assist (Ford) | 液压助力（福特） |
| HPA | Health Protection Agency (UK) | 健康保护局（英国） |
| HPA | Hydraulic Project Approval | 水利项目批准 |
| HPA | Health Plan Administrator | 健康计划管理员 |
| HPA | Home Price Appreciation | 房价上涨 |
| HPA | Human Platelet Antigen | 人血小板抗原 |
| HPA | Hereditary Papulotranslucent Acrokeratoderma | 遗传性半透明性肢端角化病 |
| HPA | High Performance Addressing | 高性能寻址 |
| HPA | Hectopascal | 赫托帕斯卡 |
| HPA | High Pressure Air | 高压空气 |
| HPA | High Power Amplifier | 高功率放大器 |
| HPA | Hawaii Preparatory Academy | 夏威夷预备学院 |
| HPA | High Pressured Air | 高压空气 |
| HPA | Homeowner's Protection Act of 1998 | 财产保护法,1998年 |
| HPA | Hypothalamic- Pituitary- Adrenal (axis) | 下丘脑-垂体-肾上腺（轴） |
| HPA | Hyperphenylalaninemia, Mild | 高苯丙氨酸血症，轻度 |
| HPA | Host Protected Area | 主机保护区域 |
| HPA | Health Protection Agency | 健康保护局 |
| HPA | Head of Procurement Activity | 采购处处长 |
| HPA | hydroxy propanoic acid | 羟基丙酸 |
| HPA | High Performance Amplifier | 高性能放大器 |
| HPA | hypokalemic primary aldosteronism | 低钾原发性醛固酮增多症 |
| HPA | hypothalamic-pituitary-adrenal | 下丘脑-垂体-肾上腺 |
| HPA | Ha'apai, Tonga Islands, South Pacific | 'apai公顷,南太平洋岛屿,汤加 |
| HPA | Human-Powered Aircraft | 人力飞机 |
| HPA | hemagglutinating penicillin antibody | 血凝青霉素抗体 |
| HPA | High Performance Array | 高性能阵列 |
| HPA | Higher-order Path Adaptation | 高阶路径自适应 |
| HPA | hyperprolactinaemic amenorrhoea | 高泌乳素血症性闭经 |
| HPA | Hydraulic Power Assembly | 液压动力总成 |
| HPA | hypothalamic-pituitary-adrenocortical | 下丘脑-垂体-肾上腺皮质 |
| HPA | Higher Polyamine (chemical) | 高级多胺（化学） |
| HPA | hereford parental attitude(survey) | 赫里福德父母态度（调查） |
| HPA | Hard Physical Address | 硬物理地址 |
| HPA | Hanoi Plan of Action | 河内行动计划 |
| HPA | Head of Procuring Activity | 采购处处长 |
| HPA | Hermes Precisa Australia | Hermes Precisa澳大利亚 |
| HPA | High Point Academy (middle school in Pasadena, California) | 高点学院（加利福尼亚州帕萨迪纳的中学） |
| HPA | Hamilton Port Authority (Canada) | 汉密尔顿港务局（加拿大） |
| HPA | Half-Power Angle | 半功率角 |
| HPA | Horse Protection Act of 1970 | 1970年《马匹保护法》 |
| HPA | Health Policy and Administration (education program) | 卫生政策和管理（教育计划） |
| HPA | Home Page Award | 主页奖 |
| HPA | Histoplasma Capsulatum Polysaccharide Antigen | 辣椒组织胞浆多糖抗原 |
| HPA | Historic Preservation Agency | 历史保护局 |
| HPA | Host Protected Area (hard disks) | 主机保护区域（硬盘） |
| HPA | Hazardous Products Act | 危险产品法 |
| HPA | High Performance Analog | 高性能模拟 |
| HPA | Haunted Pennsylvania (website) | 闹鬼的宾夕法尼亚州（网站） |
| HPA | Hypothalamic-Pituitary-Adrenal/Adrenocortical | 及其/肾上腺皮质 |
| HPA | Hydroxy-Propyl Acrylate | 丙烯酸羟基丙酯 |
| HPA | Horizontal Planar Array | 水平平面阵列 |
| HPA | Hypophyseal-Pituitary Axis | 垂体垂体轴 |