SIGNAL
| Acronym | Definition |
|---|---|
| SIGNAL | Strategic Inter-Governmental Nutrition Alliance (Australia) |
| SIGNAL | Students Interested in Growth Networking and Leadership (New Hampshire) |
| SIGNAL | Stream Invertebrate Grade Number Average Level (aquatic bioassessment) |
| SIGNAL | Seismic Information Gathering and Network Alert (Tokyo Gas Company; Japan) |
| SIGNAL | Simulation and Integration of Ground, Network and Air Links (FAA developed RADAR simulation program) |