| TAN | Total Acid Number | 总酸值 |
| TAN | tangent | 正切 |
| TAN | Terminal Access Network | 终端访问网络 |
| TAN | Transaction Authorization Number (banking) | 交易授权号(银行) |
| TAN | Texas Association of Nurserymen | 德克萨斯州托儿所协会 |
| TAN | tanga virus | 坦加病毒 |
| TAN | Tax Anticipation Note | 税收预测说明 |
| TAN | Tape Area Network | 磁带区域网络 |
| TAN | Tasso Annuale (Italian) | Tasso Annuale(意大利语) |
| TAN | Tannate | 鞣酸盐 |
| TAN | Translocation-Associated Notch | 易位相关缺口 |
| TAN | Tangalooma, Queensland, Australia | 澳大利亚昆士兰州坦格洛马 |
| TAN | Test Advisory Notice | 测试咨询通知 |
| TAN | Transition Aftercare Network | 过渡后护理网络 |
| TAN | Trunk Appearance Number | 行李箱外观编号 |
| TAN | Trusted Advisor Network | 受信任的顾问网络 |
| TAN | Technical Application Note | 技术应用说明 |
| TAN | Tandy Corporation | 坦迪公司 |
| TAN | Total Anime Network | 动画网络总数 |
| TAN | Tooth and Nail (record company) | 牙齿和指甲(唱片公司) |
| TAN | Total Area Network | 总区域网络 |
| TAN | total adenine nucleotides | 总腺嘌呤核苷酸 |
| TAN | Tree Augmented Naive | 树增强钉 |
| TAN | tonically autoactive neuron | 张力自主神经元 |
| TAN | Treatment Authorization Number (healthcare billing) | 治疗授权编号(医疗账单) |
| TAN | Transaktionsnummer (German: Transaction Number) | 交易号码(德语:Transaction Number) |
| TAN | Tax Account Number | 税务账号 |
| TAN | The American Nurse | 美国护士 |
| TAN | Tactical Area Network | 战术区域网络 |
| TAN | total ammonia nitrogen | 总氨氮 |
| TAN | Temporary Authorization Number (password with expiration date) | 临时授权号(带过期日期的密码) |
| TAN | Tiny Area Network | 微小区域网络 |
| TAN | Transportation Advisory Notice | 交通咨询通知 |
| TAN | The Anime Network | 动画网络 |
| TAN | Tax Anticipation Note(s) | 税收预测说明 |
| TAN | Test Area North | 测试区北 |
| TAN | Tremor Action Network (Pleasanton, CA) | Tremor行动网络(加利福尼亚州普莱森顿) |
| TAN | Teletype Alert Network | 电传警报网络 |
| TAN | Table Area Network | 表区域网络 |