| TAN | Table Area Network 
| Others |
| TAN | Tacoda Audience Networks
| Others |
| TAN | Taking A Nap
| Others |
| TAN | Tal Ammonia Nitrogen
| Others |
| TAN | Tananarive, Madagascar (Spaceflight Tracking and Data Network Site)
| Others |
| TAN | Tangalooma, Queensland, Australia
| Others |
| TAN | Tangent
| Others |
| TAN | Tannate
| Others |
| TAN | Tape Area Network
| Others |
| TAN | Tax Anticipation Note
| Others |
| TAN | Tax Deduction Account Number
| Others |
| TAN | Tax Deduction and Collection Account Number
| Others |
| TAN | Technical Advice Note
| Others |
| TAN | Technical Advice Note (Wales)
| Others |
| TAN | Technical Assistance Network
| Others |
| TAN | Telecommunications And Networks
| Others |
| TAN | Terrance Argh Ng
| Others |
| TAN | Tiny Area Network
| Others |
| TAN | Total Acid Number
| Others |
| TAN | Total Anime Network
| Others |
| TAN | Total Area Network
| Others |
| TAN | Traction Avant Nederland
| Others |
| TAN | Traditionalism Authority and Nationalism
| Others |
| TAN | Traffic Area Network
| Others |
| TAN | Trans Actions Number
| Others |
| TAN | Trans Am Nationals
| Others |
| TAN | Transaction Authentication Number
| Others |
| TAN | Transaction Number
| Others |
| TAN | Transition Aftercare Network
| Others |
| TAN | Travel Advantage Network
| Others |
| TAN | Tree Augmented Naive
| Others |
| TAN | Trust Account Number
| Others |
| TAN | Trusted Advisor Network
| Others |
| TAN | Turkish Archaeological News
| Others |
| TAN | Twice As Nice
| Others |