| APP | Approve | 核准,认可,承认 |
| APP | Annual Progress Report | 年度进展报告 |
| APP | Application | 应用 |
| APP | Apparatus | 设备 |
| APP | APAPA | 阿巴巴 |
| APP | Asia Pulp Paper | 亚洲浆纸集团公司 |
| APP | Advanced Program-to-Program Communications | 高等程序对程序通讯(网络系统架构的规约) |
| APP | A Posteriori Probability | 后验概率 |
| APP | Approach Control | 进近管制 |
| APP | Armor Piercing Proof | 穿甲试验 |
| APP | Atactic Polypropylene | 无规聚丙烯 |
| APP | Association for Portland Progress | 波特兰进步协会 |
| APP | Association Past President | 协会前任主席 |
| APP | Association of Purchasing Professionals | 采购专业人员协会 |
| APP | Association of Professional Piercers | 职业穿孔机协会 |
| APP | Alan Parson's Project (band) | 艾伦·帕森项目(带) |
| APP | American Precision Prototyping | 美国精密原型 |
| APP | Automated Post-Post | 自动邮局 |
| APP | Aviation Plans Policy (USMC) | 航空计划政策（USMC） |
| APP | Auxiliary Power Plant | 辅助发电厂 |
| APP | Acoustic Prediction Program | 声学预测程序 |
| APP | Agricultural Pricing Policy | 农业定价政策 |
| APP | Analog Pre-Processor | 模拟预处理器 |
| APP | Apprehend | 逮捕 |
| APP | Application (file name extension) | 应用程序（文件扩展名） |
| APP | Apparently | 显然地 |
| APP | Amyloid Precursor Protein (neurology) | 淀粉样前体蛋白（神经学） |
| APP | Appellatus (Latin: Called, Codices and Manuscripts) | Appelatus（拉丁语：被叫、密码和手稿） |
| APP | Army Procurement Procedure | 陆军采购程序 |
| APP | Access Processing Parameters | 访问处理参数 |
| APP | Accident Prevention Plan (USACE safety management action plan) | 事故预防计划（USACE安全管理行动计划） |
| APP | Adoption Pay Period (UK) | 收养支付期（英国） |
| APP | Acoustic Phase Plate | 声学相位板 |
| APP | American Presence Post (smaller version of a US consulate) | 美国存在邮政（美国领事馆的较小版本） |
| APP | Agent Partner Program | 代理合作伙伴计划 |
| APP | Aegean Park Press | 爱琴海公园出版社 |
| APP | Attacking Poverty Program | 消除贫困计划 |
| APP | Applications Portability Profile | 应用程序可移植性配置文件 |
| APP | alum-precipitated pyridine | 明矾沉淀吡啶 |
| APP | Active Pointer Present | 存在活动指针 |
| APP | annular pustular psoriasis | 环状脓疱性银屑病 |
| APP | Art in Public Places | 公共场所的艺术 |
| APP | 4-aminopyrazolo(3,4-d)pyrimidine | 4-氨基吡唑并（3,4-d）嘧啶 |
| APP | Auxiliary Pump Pressure | 辅助泵压力 |
| APP | alum-precipitated protein | 明矾沉淀蛋白 |
| APP | artificial pneumoperitoneum | 人工气腹 |
| APP | Annual Procurement Plan | 年度采购计划 |
| APP | adenine diphosphate | 腺嘌呤二磷酸 |
| APP | Alternative Payment Program | 替代付款计划 |
| APP | avian pancreatic polypeptide | 禽胰多肽 |
| APP | Appartement (French: Apartment) | 公寓（法语：Apartment） |
| APP | Amyloid Precursor Protein | 淀粉样前体蛋白 |
| APP | antiplatelet plasma | 抗血小板血浆 |
| APP | automated physiologic profile | 自动生理剖面图 |
| APP | Approach Center (aviation) | 进近中心（航空） |
| APP | Administrative Policy & Procedure | 管理政策及程序 |
| APP | Acoustic Performance Prediction | 声学性能预测 |
| APP | Acute Phase Protein | 急性期蛋白 |
| APP | Associated Press of Pakistan | 巴基斯坦美联社 |
| APP | Advanced Placement Program | 高级安置计划 |
| APP | Advanced Procurement Plan | 高级采购计划 |
| APP | Allied Procedural Publications | 联合程序出版物 |
| APP | Adjusted Peak Performance (computing speed) | 调整后的峰值性能（计算速度） |
| APP | Annual Performance Plan | 年度绩效计划 |
| APP | Approach Control Service (air navigation) | 进近控制服务（空中导航） |
| APP | Apple Pie Parser | 苹果派分析器 |
| APP | Aquifer Protection Permit | 含水层保护许可证 |
| APP | Attached Payload Pallet | 连接的有效载荷托盘 |
| APP | Agency Peculiar Property (military) | 机构特殊财产（军事） |
| APP | Accredited Purchasing Practitioner | 经认证的采购从业者 |
| APP | Appalachian | 阿巴拉契亚 |
| APP | Asset Protection Planner | 资产保护计划员 |
| APP | American Patriot Party (Jeffersonian philosophy) | 美国爱国者党（杰斐逊哲学） |
| APP | Acoustic Performance Program | 声学性能计划 |
| APP | Asbury Park Press (newspaper) | 阿斯伯里公园出版社（报纸） |
| APP | Advance Procurement Plan | 预先采购计划 |
| APP | Application Programming Platform | 应用程序编程平台 |
| APP | ATM Peer-to-Peer | ATM对等 |
| APP | Assessing Pupils' Progress (formal teacher assessment scheme used in UK schools) | 评估学生的进步(正式的教师评价方案适用于英国学校) |
| APP | FAA Airport Planning and Programming Office | FAA机场规划和规划办公室 |
| APP | Associação de Professores de PortuguÊs (Portugal) | Associação de Professores de PortuguÊs (Portugal) |
| APP | Actinobacillus Pleuropneumoniae | 胸膜肺炎放线杆菌 |
| APP | Advance Placement Physics | 提前安置物理学 |
| APP | All People's Party | 所有人的宴会 |
| APP | Associative Parallel Processor | 关联并行处理器 |
| APP | American Public Power | 美国公共权力 |
| APP | Approved Property Program | 批准的物业计划 |
| APP | Application Marker | 应用程序标记 |
| APP | Air Parcel Post | 航空邮包 |
| APP | Alabama Partnership for Progress | 阿拉巴马州进步伙伴关系 |
| APP | Atomic Power Plant | 原子能发电厂 |
| APP | Apple Product Professional | 苹果产品专业版 |
| APP | Aggregate Project Plan | 聚合项目计划 |
| APP | Alliance Populaire et Progressiste (French: Popular Progress Alliance, Mauritania) | 大众进步联盟（法语：大众进步联盟，毛里塔尼亚） |