| MAC | Macao | 澳门 |
| MAC | Maritime Arbitration Commission | 海事仲裁委员会 |
| MAC | Macau (ISO Country code) | 澳门(ISO国家/地区代码) |
| MAC | Measurement and Control | 测量与控制 |
| MAC | Medium Access Control | 媒体接入控制 |
| MAC | multiply-accumulate | 累积乘法 |
| MAC | Mediocre Angle Case | 普通角采样 |
| MAC | Macintosh | 苹果电脑 |
| MAC | Media Access Control | 媒体访问控制 |
| MAC | Media Access Control | 媒體存取控制 |
| MAC | Message Authentication Code | 消息验证代码 |
| MAC | maximum allowable concentration | 最高允许浓度 |
| MAC | Machine Aided Cognition | 机器辅助识别 |
| MAC | Man and Computer | 《人与计算机》 |
| MAC | Medium Access Control Layer | 介质访问控制层 |
| MAC | multiaction computer | 多功能计算机 |
| MAC | Multi-Access Computer | 多路存取计算机 |
| MAC | Mean Aerodynamic Chord | 平均气动弦长 |
| MAC | Manhattan Association of Cabarets and Clubs | 曼哈顿夜总会协会 |
| MAC | Metropolitan Airports Commission | 大都会机场委员会 |
| MAC | Move, Add, Change | 移动、添加、更改 |
| MAC | Mouse Activated Computer (suggested acronym for Apple Macintosh computer) | 鼠标激活计算机(建议使用Apple Macintosh计算机的缩写) |
| MAC | Medical Affirmative Claims | 医疗肯定性索赔 |
| MAC | Maximum Allowable Cost | 最大允许成本 |
| MAC | Membrane Attack Complex | 膜攻击复合体 |
| MAC | Macintosh (slang for Apple computer) | Macintosh(苹果电脑的俚语) |
| MAC | Mandatory Access Control | 强制访问控制 |
| MAC | Marginal Abatement Cost (curve; metric of costs of complying with Kyoto Protocol for reducing greenhouse gases) | 边际减排成本(曲线;遵守《京都议定书》减少温室气体的成本度量) |
| MAC | Media Access Controller | 媒体访问控制器 |
| MAC | Market Access and Compliance (US Department of Commerce) | 市场准入与合规(美国商务部) |
| MAC | Military Assistance Command | 军事援助司令部 |
| MAC | Multiplying Accumulator | 乘法累加器 |
| MAC | Maneuver Area Command | 机动地域司令部 |
| MAC | Multiple Access Contract | 多路访问合同 |
| MAC | Middle America Cox (Cox-Internet) | 中美洲考克斯(考克斯互联网) |
| MAC | Manually Activated Call point (fire protection systems) | 手动激活呼叫点(消防系统) |
| MAC | Major Area Commander | 主要地区指挥官 |
| MAC | Mid-Atlantic Center for the Arts (tours & events; Cape May, NJ) | 艺术(2003中心参观和事件,开普敦;也许) |
| MAC | Magnetic Anomaly Concealment | 磁异常隐藏 |
| MAC | Mainland Affairs Council (Taiwan, China) | 大陆事务委员会(中国台湾) |
| MAC | Municipal Advisory Council | 市政咨询委员会 |
| MAC | Minimal Antibiotic Concentration | 最低抗生素浓度 |
| MAC | Military Armament Corporation (produced Mac 10&11 SMGs) | 军事装备有限公司(Mac 10&11产生SMGs) |
| MAC | Multiplexed Analogue Components | 多路模拟组件 |
| MAC | Multi-Sensor Air Campaign | 多传感器空中运动 |
| MAC | Mobile Air Conditioner | 移动式空调 |
| MAC | Major Ambulatory Category | 主要门诊类别 |
| MAC | Mid America Corvette (company) | 中美洲克尔维特(公司) |
| MAC | Machine Address Code | 机器地址代码 |
| MAC | Multiplier Accumulator Chip | 乘法器累加器芯片 |
| MAC | Money Access Center | 货币存取中心 |
| MAC | Midwest CHP Application Center | 中西部热电联产应用中心 |
| MAC | Multifiber Array Connector | 多光纤阵列连接器 |
| MAC | Mission Assignment Coordinator | 任务分配协调员 |
| MAC | Montana Agricultural College | 蒙大拿农业学院 |
| MAC | Municipal Assistance Corporation (New York City) | 市政援助公司(纽约市) |
| MAC | Mediterranean Air Command (WWII) | 地中海空军司令部(二战) |
| MAC | Multicultural Awareness Council | 多元文化意识委员会 |
| MAC | Multi Axis Controller | 多轴控制器 |
| MAC | Military Airlift Command (US Air Force) | 军事空运司令部(美国空军) |
| MAC | Marine Aquarium Council | 海洋水族馆委员会 |
| MAC | Message Authentication Control | 消息身份验证控制 |
| MAC | Maximum Adjacent Cut (locksmithing) | 最大相邻切割(锁边) |
| MAC | Military Affairs Council | 军事委员会 |
| MAC | Mathematics and Computation (MIT Artificial Intelligence Lab project) | 数学与计算(麻省理工学院人工智能实验室项目) |
| MAC | Medicare Administrative Contractor | 医疗保险管理承包商 |
| MAC | Minimum Annual Commitment | 最低年度承诺 |
| MAC | Main Automation Contractor | 主要自动化承包商 |
| MAC | Multiple Award Contracts | 多项奖励合同 |
| MAC | Masonry Advisory Council | 砌体咨询委员会 |
| MAC | Medical Advisory Council | 医学咨询委员会 |
| MAC | Material Accounting Center | 物料核算中心 |
| MAC | Measurement and Analysis Center | 测量和分析中心 |
| MAC | Master Addictions Counselor | 成瘾大师顾问 |
| MAC | Manufacturing Alliance of Connecticut | 康涅狄格州制造联盟 |
| MAC | Multiple Access Communications Limited | 多址通信有限公司 |
| MAC | Moves, Adds, and Changes | 移动、添加和更改 |
| MAC | Memory and Aging Center | 记忆和老化中心 |
| MAC | Manufacturing Advisory Center | 制造咨询中心 |
| MAC | Memory Access Controller | 内存访问控制器 |
| MAC | Musical Arts Center | 音乐艺术中心 |
| MAC | Marketing Advisory Committee | 营销咨询委员会 |
| MAC | Monitored Anesthesia Care | 监控麻醉护理 |
| MAC | Maximum Acceptable Concentration | 最大可接受浓度 |
| MAC | Monitored Anaesthesia Care | 监控麻醉护理 |
| MAC | Michigan Apple Committee | 密歇根苹果委员会 |
| MAC | Mission Assurance Category | 任务保障类别 |
| MAC | Mid-Arm Muscle Circumference | 中臂肌肉周长 |
| MAC | Maintenance Allocation Chart | 维护分配表 |
| MAC | Mean Aerodynamic Center | 平均空气动力中心 |
| MAC | Macaroni | 通心粉 |
| MAC | Material Adverse Change | 重大不利变化 |
| MAC | Mixed Armistice Commission | 混合停战委员会 |
| MAC | Mid-American Conference | 中美洲会议 |
| MAC | Management Advisory Committee | 管理咨询委员会 |
| MAC | Multicultural Advisory Committee | 多元文化咨询委员会 |
| MAC | Metropolitan Arts Commission | 大都会艺术委员会 |