| Acronym | Definition |
|---|
| PDD | Pervasive Developmental Disorder |
| PDD | Project Design Document |
| PDD | Presidential Decision Directive (part of NSC) |
| PDD | Professional Development Day (school teachers) |
| PDD | Premenstrual Dysphoric Disorder |
| PDD | Proventricular Dilatation Disease |
| PDD | Photodynamic Diagnosis |
| PDD | Post Dial Delay (New Global) |
| PDD | Product Design and Development |
| PDD | Professional Disc for DATA |
| PDD | Puy de Dôme (France) |
| PDD | Psychophysiological Detection of Deception (polygraph) |
| PDD | Prescribed Daily Dose |
| PDD | Project Definition Document |
| PDD | Djibouti Development Party |
| PDD | Percentage Depth Dose (radiation therapy) |
| PDD | Portable Digital Document (QuickDraw GX, Mac OS) |
| PDD | Proventricular Dilation Disease |
| PDD | Preliminary Design Document |
| PDD | Presidential Disaster Declaration |
| PDD | Paperless Direct Debit (UK) |
| PDD | Product Definition Data |
| PDD | Pulsed Discharge Detector |
| PDD | Platform-Dependent Driver |
| PDD | Payment Due Date |
| PDD | Provision for Doubtful Debts |
| PDD | Personnel Detection Device |
| PDD | Program Description Document |
| PDD | Persons with Developmental Disability |
| PDD | Patient's Dental Dictionary |
| PDD | Program Design Document |
| PDD | Page Description Diagram |
| PDD | Program Design Description |
| PDD | Payload Definition Document |
| PDD | Pedigree Devil Dog (US Marine Corps) |
| PDD | Progressive Diaphyseal Dysplasia |
| PDD | Product Development Detachment |
| PDD | Priority Delivery Date |
| PDD | Program Definition Document |
| PDD | Pre Dinner Drink(s) |
| PDD | Post Delivery Date |
| PDD | Projected Departure Date |
| PDD | Process Decomposition Diagram (Sprint) |
| PDD | Projected Decision Date |
| PDD | Planned Delivery Date |
| PDD | Personal Development Dialogue |
| PDD | Precision Depth Digitizer |
| PDD | Preliminary Due Date |
| PDD | Program/Process Dependency Diagram |
| PDD | Package Designation & Description |
| PDD | Point Detonating Delay (fuse) |
| PDD | Performance Description Document |
| PDD | Perl Data Dump |
| PDD | Parameter Dependency Diagram (systems management) |
| PDD | Post-Decorrelative Detector |
| PDD | Professional Development District (various schools) |