| Abbreviation | Definition |
|---|---|
| PBF | Play By Forum |
| Personal Democracy Forum | |
| PF | Personal Forum |
| PFDB | Prince Fans Discussion Board |
| PFR | PRIVACY Forum Radio |
| PIF | Patient Information Forum |
| PIF | Prepaid International Forum |
| PPF | Patient Public Forum |
| PPF | Pro Punter Forum |
| PPF | Public Policy Forum |
| PPTF | Peak Park Transport Forum |
| PRF | Premier Rock Forum |
| PRF | Premiere Rock Forum |
| PWLF | Poets and Writers Literary Forum |
| PWRF | Plymouth Welfare Rights Forum |
| RCAF | Research Creative Activities Forum |
| REFF | Renewable Energy Finance Forum |
| RFF | Reality Fan Forum |
| RFO | rfobasic freeforums org |
| RISF | Rail Industry Skills Forum |