| Acronym | Definition |
|---|
| TPN | Total Parenteral Nutrition |
| TPN | The Pallet Network (UK) |
| TPN | Trading Process Network |
| TPN | Transaction Program Name |
| TPN | Triple Pole & Neutral (circuit breakers) |
| TPN | Time Petri Net |
| TPN | Transatlantic Policy Network (est. 1992) |
| TPN | Triphosphopyridine Nucleotide |
| TPN | Trade Policy and Negotiations (various locations) |
| TPN | The Perspectives Network |
| TPN | Timed Petri Net |
| TPN | Tactical Packet Network |
| TPN | Trading Partner Number |
| TPN | Tatrzanski Park Narodowy (Polish: Tatry Mountains National Park) |
| TPN | Travelocity Partner Network (Texas) |
| TPN | The Project Network |
| TPN | Tooth-Pulp Driven Neuron (dentistry) |
| TPN | True Proportional Navigation |
| TPN | Three Phase and Neutral |
| TPN | Trading Partner Network |
| TPN | True Part Number |
| TPN | Transaction Processing Network |
| TPN | The Pixelgeek Network (website) |
| TPN | Tennant Profile Network (South Africa) |