| MOO | MUD Object-Oriented | 对象导向式MUD游戏 |
| MOO | Museums Outreach Online | 博物馆外联在线 |
| MOO | Met Office Online | 英国气象局在线 |
| MOO | Mac Os Optimizer | Mac Os优化器 |
| MOO | Multi Object Oriented | 面向多对象 |
| MOO | Mobile Online And Offline | 在线和离线移动 |
| MOO | Multiplayer Online Object | 多人在线对象 |
| MOO | Moomba, South Australia, Australia | Moomba，南澳大利亚州，澳大利亚 |
| MOO | MoonRock language source code file (MoonRock) | MoonRock语言源代码文件（MoonRock） |
| MOO | Measure Of Outcome | 结果衡量标准 |
| MOO | mastoid obliteration operations | 乳突闭塞手术 |
| MOO | Mutual of Omaha (insurance company) | 奥马哈互助保险公司（保险公司） |
| MOO | Memorandum Of Objection | 异议备忘录 |
| MOO | Multiuser Object Oriented | 面向多用户对象 |
| MOO | Memorandum Opinion and Order (FCC) | 备忘录意见和命令（FCC） |
| MOO | Marathon Infinity (computer game; oo represents infinity symbol) | 马拉松无限（电脑游戏；oo代表无限符号） |
| MOO | Management Of Objectives | 目标管理 |
| MOO | Market on Open (investing/trading) | 在公开市场上交易的投资/() |
| MOO | Mud Oriented Objects | 面向泥浆的对象 |
| MOO | Material on Order | 订购的材料 |
| MOO | Maintenance Operations Officer (US Air Force) | 维护运营官（美国空军） |
| MOO | MPLS (Multi-Protocol Label Switching) Over OTN (Optical Transport Network) | OTN（光传输网络）上的MPLS（多协议标签交换） |
| MOO | MUD Object Oriented | MUD面向对象 |
| MOO | Multiuser Object-Oriented | 面向多用户对象 |
| MOO | Master of Orion (computer game) | 猎户座大师（电脑游戏） |
| MOO | Mothers Opposed to the Occult | 反对神秘的母亲 |
| MOO | Matter of Opinion | 意见问题 |
| MOO | Master Of Orion | 猎户座大师 |