PLSO
| Acronym | Definition |
|---|---|
| PLSO | Professional Land Surveyors of Oregon |
| PLSO | Partial Lump Sum Option (retirement plan) |
| PLSO | Professional Land Surveyors of Ohio (Dublin, OH) |
| PLSO | Parker Library Steward Observatory (University of Arizona) |
| PLSO | Post Launch Support Office (European Space Agency) |
| PLSO | Public Land Survey Office (Washington State Department of Natural Resources) |
| PLSO | Phonetic Letter Spell Out |