| Acronym | Definition |
|---|
| PAK | Pakistan |
| PAK | Palatka (Amtrak station code; Palatka, FL) |
| PAK | Polycyclische Aromatische Koolwaterstoffen (Dutch: Polycyclic Aromatic Hydrocarbons) |
| PAK | Polyzyklischen Aromatischen Kohlenwasserstoffen (German: Polycyclic Aromatic Hydrocarbons) |
| PAK | P21-Activated Kinase |
| PAK | Product Authorization Key |
| PAK | Package |
| PAK | Product Activation Key |
| PAK | Primary Authorization Key |
| PAK | Photo Album Kit |
| PAK | Press Any Key |
| PAK | Product Authorization Key (Cisco) |
| PAK | Panzerabwehrkanone (anti-tank cannon) |
| PAK | Polyester Alkyd |
| PAK | Policy and Knowledge Facility (Nigeria) |
| PAK | Compressed .PAK File (Id Software File Extension) |
| PAK | Perinatal Association of Kansas |
| PAK | Post Award Kickoff (contracting) |