OTTER
| Acronym | Definition |
|---|---|
| OTTER | Office of the Tasmanian Economic Regulator (Australia) |
| OTTER | Opto-Thermal Transient Emission Radiometry |
| OTTER | Oregon Transect Terrestrial Ecosystem Research |
| OTTER | Older Teachers Training Early Readers (Florida) |
| OTTER | Operational Training, Test, and Evaluation of Radars |