| Acronym | Definition |
|---|
| P2 | Pollution Prevention |
| P2 | Primary 2 (various organizations) |
| P2 | Phase II |
| P2 | Pentium II (Intel) |
| P2 | Player 2 (video games) |
| P2 | Priority 2 |
| P2 | Sony Playstation 2 |
| P2 | Second Position |
| P2 | Propaganda Due (Italian) |
| P2 | Postal 2 (game) |
| P2 | Professional Plug-In (Panasonic) |
| P2 | Power Projection |
| P2 | Pioneer 2 (Phantasy Star game) |
| P2 | Predict and Prevent (Improvised Explosive Device Defeat Tenet Lane) |
| P2 | Pulmonic Second Heart Sound |
| P2 | Progressive Professionalism (US Air Force) |
| P2 | PMBP Automated Information System (Army Corps of Engineers) |