| PDF | Powder Diffraction File | - | Computer Acronyms(common) |
| PDF | Pair Distribution Function | - | Computer Acronyms(common) |
| PDF | Planar Deformation Feature | - | Computer Acronyms(common) |
| PDF | Probability Density Function | - | Computer Acronyms(common) |
| PDF | Probability-distribution Function | - | Computer Acronyms(common) |
| PDF | Portable Document Format | - | Computer and Internet |
| PDF | Portable Document Format | - | Human Genome |
| PDF | Pocket Dosimeter FEMA | - | Organizations |
| PDF | Panama[nian] Defense Forces (abolished 1990) - Portable Document Format - Principal Direction Of Fire | - | Astronomy |
| PDF | Probability Density Functions | - | Business and Finance |
