| Abbreviation | Definition |
|---|---|
| PDI | Priestly Demolition Inc. |
| PDIC | Phelps Dodge International Corporation |
| PDIC | Professional Diving Instructors Corporation |
| PDIC | Profileprotection Development International Corporation |
| PDJ | Peter D. Jones Wildlife Photography |
| PDL | Pacific Diagnostic Laboratories |
| PDL | Petra Diamonds Ltd |
| PDL | Premiere Diagnostic Laboratory |
| PDL | Preston Deeply Labs |
| PDLI | Preston Deeply Labs, Inc. |
| PDLI | Protein Design Labs Inc |
| PDM | Paul Diatlovich Motorsports |
| PDMI | Pharmacy Data Management Inc |
| PDMIC | Product Data Management Information Center |
| PDO | Petroleum Development Oman |
| PDP | Pacific Drums and Percussion |
| PDP | Premier Deckstaining Power |
| PDP | Premier Deckstaining & Power |
| PDPL | Parkway Display Products Limited |
| PDR | Public Domain Registry, Inc. |