| OAL | OverAll Length | 全长,总长 |
| OAL | OEM Adaption Layer | 原始设备制造商适应层 |
| OAL | Olympic Airways Greece (ICAO code) | 希腊奥林匹克航空公司（ICAO代码） |
| OAL | Optical Access Link | 光接入链路 |
| OAL | Over All Length | 整个长度 |
| OAL | Open Audio License (EFF) | 开放音频许可证（EFF） |
| OAL | Overall Length (see LOA) | 总长度（见LOA） |
| OAL | ObservatÓrio AstronÓmico de Lisboa (Portugese: Lisbon Astronomical Observatory) | ObservatÓrio AstronÓmico de Lisboa (Portugese: Lisbon Astronomical Observatory) |
| OAL | Open Audio License | 打开音频许可证 |
| OAL | Office of Administrative Law | 行政法办公室 |
| OAL | Open Audio Library | 打开音频库 |
| OAL | Oem Adaptation Layer | Oem适应层 |
| OAL | Ohio Art League | 俄亥俄州艺术联盟 |
| OAL | Optimized ACL Logging (Cisco) | 优化ACL日志记录（Cisco） |
| OAL | Optical Array Logic | 光学阵列逻辑 |
| OAL | Cacoal, TO, Brazil | 巴西，TO，Cacoal |
| OAL | Order, Algebra and Logics (conference) | 秩序、代数和逻辑（会议） |
| OAL | Operations Acceptance Letter (UK project management) | 运营验收函（英国项目管理） |
| OAL | Ost Allgäu (region in Germany) | Ost Allgäu (region in Germany) |
| OAL | Offline Address List (Microsoft Outlook) | 脱机地址列表（Microsoft Outlook） |
| OAL | OrganizaciÓn Anarquista Libertad (Spanish; Anarchist Freedom Organization, Argentina) | OrganizaciÓn Anarquista Libertad (Spanish; Anarchist Freedom Organization, Argentina) |
| OAL | Ordinary Adoption Leave (UK) | 普通收养假（英国） |