| TBA | To Be Assured | 待定,定缺 |
| TBA | To Be Arranged | 正在安排中 |
| TBA | To Be Advised | 正在考虑中 |
| TBA | To Be Assigned | 待定 |
| TBA | total biliary acid | 总胆汁酸 |
| TBA | Tennessee Beekeepers Association | 田纳西养蜂人协会 |
| TBA | Thai Boxing Association (USA) | 泰国拳击协会（美国） |
| TBA | Texas Bandmaster's Association | Bandmaster德克萨斯州的协会 |
| TBA | Tidewater Biking Association | 潮汐自行车协会 |
| TBA | Tennessee Bar Association | 田纳西州律师协会 |
| TBA | Tidewater Builders Association (Chesapeake, VA) | 潮水建设者协会（弗吉尼亚州切萨皮克） |
| TBA | Traditional Boat Association | 传统船艇协会 |
| TBA | Texas Beekeepers Association (Round Rock, Texas) | 德克萨斯养蜂人协会（德克萨斯州圆岩） |
| TBA | Thomas Blackman Associates | 托马斯·布莱克曼协会 |
| TBA | Tropical Biology Association | 热带生物学协会 |
| TBA | Teens Basketball Association | 青少年篮球协会 |
| TBA | Thoroughbred Breeders' Association | 良种繁育协会 |
| TBA | Training Better Artists Towards a Better Alaska (theater camp) | 培养更好的艺术家走向更好的阿拉斯加（戏剧营） |
| TBA | Training Business Area | 培训业务领域 |
| TBA | Tenpin Bowling Australia | Tenpin Bowling澳大利亚 |
| TBA | Tram Boarding Area (Houston Space Center) | 有轨电车乘车区（休斯顿航天中心） |
| TBA | Terminal Base Address | 终端基本地址 |
| TBA | The Buying Agency (UK government) | 购买机构（英国政府） |
| TBA | traditional birth attendant | 传统接生员 |
| TBA | To Be Acknowledged | 待确认 |
| TBA | Tertiary Butyl Alcohol | 叔丁醇 |
| TBA | Tight Binding Approximation | 紧密绑定近似 |
| TBA | To Be Approved | 待批准 |
| TBA | Tetrabutylammonium | 四丁基铵 |
| TBA | threaded blockset aligner | 螺纹砌块定位器 |
| TBA | Towards a Better Acronym (band) | 走向更好的首字母缩写（乐队） |
| TBA | Tundra Buggy Adventure | Tundra Buggy冒险 |
| TBA | To Be Absorbed | 待吸收 |
| TBA | Trans B | 变速器B |
| TBA | Tabernacle Baptist Academy (Virginia Beach, VA, USA) | Tabernacle浸信会学院（弗吉尼亚海滩，弗吉尼亚州，美国） |
| TBA | Trial Balance Adjustment (accounting) | 试算表调整（会计） |
| TBA | total bile acid | 总胆汁酸 |
| TBA | Traverse Bay Area (Intermediate School District, Traverse City, MI) | 特拉弗斯湾地区（密歇根州特拉弗斯市中学区） |
| TBA | Total Benefits Administration (a computerized benefits administration system designed by Hewitt Associates, LLC) | 总福利管理（由Hewitt Associates，LLC设计的计算机化福利管理系统） |
| TBA | Trenes de Buenos Aires SA | 布宜诺斯艾利斯特伦斯 |
| TBA | Time Brokerage Agreement (allows a broadcast facility to be operated by someone other than the owner) | 时间经纪协议（允许广播设施由所有者以外的人运营） |
| TBA | TechBoston Academy | 波士顿技术学院 |
| TBA | Tri-Border Area | 三边框区域 |
| TBA | The Blue Album (Weezer) | 蓝色专辑（Weezer） |
| TBA | Technical Bid Analysis | 技术标分析 |
| TBA | Text-Based Adventure (computer game genre) | 基于文本的冒险（电脑游戏类型） |
| TBA | Tetra Brik Aseptic | Tetra Brik无菌 |
| TBA | Trains of Buenos Aires | 布宜诺斯艾利斯火车 |
| TBA | Table of Basic Allowance | 基本津贴表 |
| TBA | Trenbolone Acetate (androgenic growth implant) | Trenbolone醋酸酯（雄激素生长植入物） |
| TBA | Tires, Batteries and Accessories | 轮胎、电池和附件 |
| TBA | Tampa Bay Area | 坦帕湾地区 |
| TBA | Task-Based Approach | 基于任务的方法 |
| TBA | Towed Buoy Antenna | 拖曳浮标天线 |
| TBA | Total Bases Allowed (baseball statistic) | 允许的总垒数（棒球统计） |
| TBA | Tertiarybutylarsine | 三丁基拉辛 |
| TBA | The Black Album (Metallica) | 黑色专辑（Metallica） |
| TBA | To Be Activated | 待激活 |
| TBA | Targeted Brownfields Assessment | 目标棕地评估 |
| TBA | Tre Bokstavs Akronym | Tre Bokstavs Akronym |
| TBA | Trockenbeerenauslese (German wine) | Trockenbeerenauslese（德国葡萄酒） |
| TBA | To Be Added | 待添加 |
| TBA | Trace-Back Algorithm | 回溯算法 |
| TBA | Transport-Based Aircraft | 运输型飞机 |
| TBA | tertiary butyl acetate | 乙酸叔丁酯 |
| TBA | To Be Assessed | 待评估 |
| TBA | trichlorobenzoic acid | 三氯苯甲酸 |
| TBA | To Be Anounced | 待宣布 |
| TBA | tris-(beta-chloroethyl)amine | 三（β-氯乙基）胺 |
| TBA | thiobarbituric acid | 硫代巴比妥酸 |
| TBA | thyroxin(e)-binding albumin | 甲状腺素结合白蛋白 |
| TBA | trenbolone acetate | 醋酸trenbolone |
| TBA | trypsin-binding activity | 胰蛋白酶结合活性 |
| TBA | Tertiary- Butyl Arsine | 叔丁基胂 |
| TBA | tuberculosis,probably active | 结核病，可能是活动性的 |
| TBA | Tires Batteries And Accessories | 轮胎电池和附件 |
| TBA | testosterone-binding affinity | 睾酮结合亲和力 |
| TBA | tumor-bearing antibody | 携带肿瘤的抗体 |
| TBA | To Be Adjusted | 待调整 |
| TBA | Thermo Bioanalysis Corp | Thermo Bioanalysis公司 |