| STAC | Shanghai Theatre Academy China | 上海戏剧学院 |
| STAC | Saskatchewan Triathlon Association Corporation | 萨斯喀彻温铁人三项协会公司 |
| STAC | Specialized Transportation Association of Colorado | 科罗拉多州专业运输协会 |
| STAC | Students Thinking Across The Curriculum | 学生跨课程思考 |
| STAC | Single Track Around Canberra | 堪培拉周边单线 |
| STAC | Skills Talents Abilities And Characteristics | 技能人才能力和特点 |
| STAC | Sectional Tournament At Club | 俱乐部分区锦标赛 |
| STAC | Send To A Colleague | 发送给同事 |
| STAC | Statistical Temporal Analysis Of Crime | 犯罪的统计时间分析 |
| STAC | Student Teacher Activity Committee | 学生教师活动委员会 |
| STAC | St Thomas Adventure Club | 圣托马斯探险俱乐部 |
| STAC | Scientific and Technical Advisory Committee | 科学和技术咨询委员会 |
| STAC | Science Technology and Culture | 科学技术与文化 |
| STAC | Sectional Tournaments At Clubs (bridge game) | 俱乐部分区锦标赛（桥牌比赛） |
| STAC | SIGINT Training Advisory Committee | SIGINT培训咨询委员会 |
| STAC | Shanghai Tourism Administrative Committee | 上海市旅游管理委员会 |
| STAC | Student Theatre Arts Complex (University of Michigan) | 学生戏剧艺术综合体（密歇根大学） |
| STAC | Steam Turbine Assisted Cogeneration | 汽轮机辅助热电联产 |
| STAC | Stop The Act Coalition | 停止行动联盟 |
| STAC | Standard Traffic Agents Code | 标准交通代理代码 |
| STAC | Southern Tier Athletic Conference | 南方一级田径大会 |
| STAC | Student Television Arts Company (Herricks High School, New Hyde Park, NY) | 学生电视艺术公司（纽约州新海德公园赫里克高中） |
| STAC | Submarine/Surface Tactical Air Controller | 潜艇战术飞行控制器/表面 |
| STAC | Students Toward an Accessible Campus | 学生走向无障碍校园 |
| STAC | Submarine Tactical Acoustic Communication | 潜艇战术声通信 |
| STAC | Saint Thomas Aquinas College | 圣托马斯阿奎那学院 |
| STAC | Science And Technology Advisory Council | 科学技术咨询委员会 |
| STAC | Sectional Tournament At Clubs | 俱乐部分区锦标赛 |
| STAC | Stac Software, Inc. | Stac软件公司。 |