| RDA | Recommended Dietary Allowance | 推荐膳食营养素供给量 |
| RDA | Remote Data Access | 远程数据访问 |
| RDA | Remote Diagnostic Agent | Oracle诊断工具 |
| RDA | Research and Development Association (Republic of Korea) | 研究与发展协会（大韩民国） |
| RDA | Riding for the Disabled Association | 残疾人骑行协会 |
| RDA | Readers Digest Association, Inc. Class A | 读者文摘协会A级 |
| RDA | Riding For Disabled Association | 残疾人骑行协会 |
| RDA | Readers Digest Association, Inc | 读者文摘协会 |
| RDA | River Deben Association (UK) | 德本河协会（英国） |
| RDA | Research Development Associates | 研究开发协会 |
| RDA | Relationship Development Assessment | 关系发展评估 |
| RDA | Retail Display Allowance | 零售展示津贴 |
| RDA | Recommended Daily Amounts (EU) | 建议每日金额（EU） |
| RDA | Records Disposition Authorization | 记录处置授权 |
| RDA | Resource Description and Access | 资源描述和访问 |
| RDA | Rassemblement Democratique Africain (French: African Democratic Rally) | 非洲民主联盟（法语：African Democratique Africain） |
| RDA | Radar Data Acquisition | 雷达数据采集 |
| RDA | Reliability Design Analysis | 可靠性设计分析 |
| RDA | Regional Development Assistance (government funding) | 区域发展援助（政府资助） |
| RDA | Regularized Discriminant Analysis | 正则判别分析 |
| RDA | Relational Distributed Architecture | 关系分布式体系结构 |
| RDA | Rear Drive Axle | 后驱动桥 |
| RDA | Recommended Daily/Dietary Allowance | 推荐每日/饮食津贴 |
| RDA | Research Development Activity | 研究开发活动 |
| RDA | Regional Development Agency | 区域开发署 |
| RDA | Republican Dads of America | 美国共和党父亲 |
| RDA | Riders Driving Around | 骑自行车的人 |
| RDA | Racial Discrimination Act | 《种族歧视法》 |
| RDA | Regional Delegate Alternate | 区域代表候补 |
| RDA | Red Dragon Alliance | 红龙联盟 |
| RDA | Regional Director of Agencies | 区域机构总监 |
| RDA | Rapid Deployment for Action | 快速部署行动 |
| RDA | Regional Development Agency (UK) | 区域开发署（英国） |
| RDA | Regional Director of Agencies (insurance) | 区域机构总监（保险） |
| RDA | Rural Development Administration (Korea) | 农村发展管理局（韩国） |
| RDA | Retro-Directive Antenna | 复古定向天线 |
| RDA | Recommended Daily Allowance | 建议每日津贴 |
| RDA | right dorsoanterior | 右背前肌 |
| RDA | refractory dysmyelopoietic anemia | 难治性肌营养不良性贫血 |
| RDA | rate dependent aberrancy | 速率依赖性畸变 |
| RDA | Richard Dean Anderson (actor) | 理查德·迪恩·安德森（演员） |
| RDA | Right Displaced Abomasum | 右移位皱胃 |
| RDA | required dietary allowance | 规定膳食津贴 |
| RDA | RÉpublique DÉmocratique Allemande (French: former Democratic Republic of Germany) | RÉpublique DÉmocratique Allemande (French: former Democratic Republic of Germany) |
| RDA | Research, Development, and Acquisition | 研究、开发和收购 |
| RDA | Remote Database Access | 远程数据库访问 |
| RDA | Rockhampton Downs, Northern Territory, Australia | Rockhampton Downs，北领地，澳大利亚 |
| RDA | Remote Data Access (Sprint) | 远程数据访问（Sprint） |
| RDA | Registration Details Application | 注册详细信息应用程序 |
| RDA | Refuse to Disclose Answer | 拒绝透露答案 |
| RDA | Remote Debug Agent | 远程调试代理 |
| RDA | Requirements Development & Analysis (JOPES module) | JOPES需求开发及分析模块) |
| RDA | Reflective Dot Array | 反射点阵列 |
| RDA | Road Development Authority | 道路发展局 |
| RDA | Recursive Decision Algorithm | 递归决策算法 |
| RDA | Research, Development, & Acquisition | 研究、开发、获取 |
| RDA | Rainy Day Amendment (Oregon, USA) | 雨天修正案（美国俄勒冈州） |
| RDA | Random Duplicate Allocation | 随机重复分配 |
| RDA | Registered Dental Assistant | 注册牙科助理 |
| RDA | Redevelopment Authority | 重建局 |
| RDA | Recommended Duty Assignment | 建议的职责分配 |
| RDA | Rajshahi Development Authority (Bangladesh) | Rajshahi开发局（孟加拉国） |
| RDA | Requirement Development Analysis | 需求开发分析 |
| RDA | Routing Domain and Area (SONET) | 路由域和区域（SONET） |
| RDA | Rapid Development Application (see also RDE) | 快速开发应用程序（另见RDE） |
| RDA | Residential Subscriber System Data Adaptor | 住宅用户系统数据适配器 |
| RDA | Remote Database Access (OSI) | 远程数据库访问（OSI） |
| RDA | Richiesta dell'Acquisto (Italian: Purchase Request) | Richiesta戴尔'Acquisto(意大利:采购的要求) |