| Acronym | Definition |
|---|
| TnA➣Total Nonstop Action (wrestling alliance) |
| TnA➣Tamil National Alliance (Sri Lanka) |
| TnA➣The New Age |
| TnA➣Training Needs Analysis |
| TnA➣Training Needs Assessment (various organizations) |
| TnA➣The National Archives (UK) |
| TnA➣Texas Nurses Association |
| TnA➣To No Avail |
| TnA➣Threose Nucleic Acid (polymer) |
| TnA➣Taskbar Notification Application |
| TnA➣Trigeminal Neuralgia Association |
| TnA➣Temporarily Not Available |
| TnA➣The New Alhambra (sports venue; Philadelphia, PA) |
| TnA➣Transitional National Assembly (Iraq) |
| TnA➣Tennessee Nurses Association |
| TnA➣Technology Needs Assessment (UN) |
| TnA➣Total Net Assets |
| TnA➣Thailand News Agency |
| TnA➣Thermal Neutron Analysis |
| TnA➣Transport Network Address |
| TnA➣Trade Negotiations and Agreements (Canada) |
| TnA➣Technologies Net Alliance (Pakistan) |
| TnA➣Trans Asia Airways |
| TnA➣Total Nutrient Admixture |
| TnA➣Tropical North Atlantic (oceanic temperature index) |
| TnA➣Thermal Neutron Activation |
| TnA➣Texas Numismatic Association |
| TnA➣Toyo Tire North America (White, GA) |
| TnA➣Transport Network Assigned (computing) |
| TnA➣Télévision Numérique Alternative (French: Digital TV Alternative; TV channel) |
| TnA➣The National Acrobat (band) |
| TnA➣Talula National Athletics (Aritzia clothing brand) |
| TnA➣Trinity Nuclear Abolition |
| TnA➣Transaction Negotiation Authority (banking; Australia) |
| TnA➣Tashi Namgyal Academy (India) |
| TnA➣Together and Always |
| TnA➣Thales North America |
| TnA➣Total Nail Avulsion |
| TnA➣Tubular Sodium Reabsorption |
| TnA➣Then, Now, Always |
| TnA➣Telephone Network Analyzer (Agilent) |
| TnA➣Tires & Asphalt (hot rod club) |
| TnA➣The Nut Association |
| TnA➣Transient Neurologic Attack |
| TnA➣Telephone Number Administration |
| TnA➣Toyota North America, Inc. |