| PCR | Photo-Conductive Resonance | - | Computer Acronyms(common) |
| PCR | Polymerase Chain Reaction | - | Computer Acronyms(common) |
| PCR | Principal Component Regression | - | Computer Acronyms(common) |
| PCR | Polymerase Chain Reaction | - | Medical |
| PCR | Payload Changeout Room | - | Organizations |
| PCR | Payload CheckoutRoom | - | Organizations |
| PCR | Payload Changeout Room | - | Organizations |
| PCR | Power Change Request | - | Organizations |
| PCR | Program Change Request | - | Organizations |
| PCR | Project Control Room | - | Organizations |
| PCR | Publication Change Request | - | Organizations |
| PCR | Polymerase Chain Reaction | - | Astronomy |
| PCR | peak cell rate
| - | Human Genome |
