| COT | 1,3,5-cyclooctatrienyl | 1,3,5-环辛四烯 |
| COT | Central Office Terminal | 局端机 |
| COT | cotangent | 余切 |
| COT | Class Of Traffic | 业务种类 |
| COT | Class Of Trunk | 中继类别 |
| COT | Change of Trim (International Association of Drilling Contractors) | 阀内件变更（国际钻井承包商协会） |
| COT | Cadet Orientation Tour | 往东方游历的军校学生 |
| COT | Certificate of Transport | 运输证书 |
| COT | Commercial Off-Topic | 商业非主题 |
| COT | crisis operations team (US DoD) | 危机行动小组（美国国防部） |
| COT | Crossroads of Twilight (book) | 黄昏的十字路口（书） |
| COT | Committee on Toxicity (UK) | 毒性委员会（英国） |
| COT | Change of Trend (finance) | 趋势变化（金融） |
| COT | Component Operability Test | 组件可操作性测试 |
| COT | Consolidated Operability Trial | 统一适用性试验 |
| COT | Cult Of Tracker | 追踪者邪教 |
| COT | Commissioned Officer Training | 委任军官培训 |
| COT | Cube Of Trees | 树的立方体 |
| COT | Container Off-Loading and Transfer System | 集装箱卸载和转运系统 |
| COT | Cyclooctatetraene | 环辛四烯 |
| COT | Coin Operated Telephone | 投币式电话 |
| COT | Consolidated Operability Test | 统一适用性试验 |
| COT | Cave Of Trials | 审判洞穴 |
| COT | Change One Thing | 改变一件事 |
| COT | Card or Tape (old term for computer storage media) | 卡或磁带（计算机存储介质的旧术语） |
| COT | Cursor on Target | 光标在目标上 |
| COT | Cult Of Tiamat | Tiamat邪教 |
| COT | Critical Operating Task | 关键操作任务 |
| COT | Car of Tomorrow | 明日之车 |
| COT | Cost of Testing | 测试成本 |
| COT | Channel of Trade | 贸易渠道 |
| COT | Consecutive Overseas Tour | 连续海外值勤 |
| COT | Chief of Transportation (US Army, Ft Eustis, VA) | 运输部长（美国陆军，弗吉尼亚州尤斯蒂斯堡） |
| COT | Continually On-line Trained | 持续在线培训 |
| COT | Center Of Town | 市中心 |
| COT | Counter Obstacle Team | 反障碍小组 |
| COT | commanding officer of troops (US DoD) | 部队指挥官（美国国防部） |
| COT | Coil-Out Temperature | 线圈输出温度 |
| COT | Class of Trade (marketing) | 贸易类别（营销） |
| COT | Certified Ophthalmic Technician | 认证眼科技师 |
| COT | Cat Over Temp | Cat温度过高 |
| COT | Commanding Officer Troops | 指挥官部队 |
| COT | Cooperative Occupational Training | 合作职业培训 |
| COT | Commercial Off the Shelf | 商用现货 |
| COT | Current Operating Time | 当前工作时间 |
| COT | Class Of Trade | 行业类别 |
| COT | Cause of Transmission | 传输原因 |
| COT | Co-Tangent | 共切线 |
| COT | Contractor's Operations Trial | 承包商的操作试验 |
| COT | Commercial Off-The-Shelf Technology | 商用现货技术 |
| COT | Consecutive Overseas Tours | 连续海外旅游 |
| COT | At the Coast (general aviation) | 在海岸（通用航空） |
| COT | Commissioned Officer Training course | 委任军官培训课程 |
| COT | Caverns of Time (World of Warcraft gaming) | 时间洞穴（魔兽世界游戏） |
| COT | Computer Office Technology | 计算机办公技术 |
| COT | Continuous Time of the Day | 一天中的连续时间 |
| COT | Computer Operator Terminal | 计算机操作员终端 |
| COT | Center for Ocean Technology | 海洋技术中心 |
| COT | College of Occupational Therapists (UK) | 职业治疗师学院（英国） |
| COT | Customer-Originated Trace (Nortel) | 客户发起跟踪（北电） |
| COT | Circle Of Trust | 信任圈 |
| COT | Cave of Trials (game) | 审判洞穴（游戏） |
| COT | Carnitine Octanoyltransferase | 肉碱八酰转移酶 |
| COT | Cancer Osaka Thyroid | 大阪甲状腺癌 |
| COT | Customer-Owned Tooling | 客户拥有的工具 |
| COT | Class of Traffic (ITU-T) | 流量等级（ITU-T） |
| COT | Cargo Only Tank (Oil Tankers) | 货舱（油轮） |
| COT | committee on trauma | 创伤委员会 |
| COT | City of Tucson (Arizona) | 图森市（亚利桑那州） |
| COT | Continuity Testing | 连续性测试 |
| COT | Central Office Technician | 中央办公室技术员 |
| COT | Clerical Office Technician | 文书办公室技术员 |
| COT | Customer Office Terminal | 客户办公室终端 |
| COT | Carry Over Transactions | 结转交易 |
| COT | Central Office Trunk | 中央局干线 |
| COT | Camping Device | 露营设备 |
| COT | Completely Off Topic | 完全脱离主题 |
| COT | cotia virus | 科蒂亚病毒 |
| COT | Check-Out on Type | 签出类型 |
| COT | continuous oxygen therapy | 持续氧治疗 |
| COT | Committee on Toxicity ... of Chemicals in Food, Consumer Products and the Environment (of the Department of Health) | 食品、消费品和环境中化学品毒性委员会（卫生部） |
| COT | critical off-time | 临界关闭时间 |
| COT | Commitment of Traders | 贸易商承诺 |
| COT | cotinine | 可替宁 |
| COT | Circle Of Truth | 真理之圈 |
| COT | committee on toxicology | 毒理学委员会 |