| Acronym | Definition |
|---|
| PDX | Priority Document Exchange (US DOC) |
| PDX | Performance Driving Experience (cars) |
| PDX | Printer Description Extension |
| PDX | Pdf Index File |
| PDX | Paradox File |
| PDX | Phone Data Exchange |
| PDX | Product Data Exchange (file name extension; XML technology) |
| PDX | Paradox Files (file name extension) |
| PDX | Primary Diagnosis |
| PDX | Product Definition Exchange |
| PDX | Professional Development Exchange (various organizations) |
| PDX | Phone Data Exchange (Proxon) |
| PDX | Printer Description eXtension (file) |
| PDX | Portland, OR, USA - Portland International Airport (Airport Code) |
| PDX | Planet Deus Ex (gaming) |
| PDX | Play Dog Excellent (Chattanooga, TN) |
| PDX | Pre-Deployment Exercise |
| PDX | Private Data Exchange |