PTOL
| Acronym | Definition |
|---|---|
| PTOL | Pentaerythritol (chemistry) |
| PTOL | Physics Today Online (American Institute of Physics) |
| PTOL | Polskiego Towarzystwa Orzecznictwa Lekarskiego (Polish: Polish Society of Medical Jurisprudence) |
| PTOL | Phototransformable Optical Label (microscopy) |
| PTOL | Peacetime Operating Level |