PKO
| Acronym | Definition |
|---|---|
| PKO | Pirate King Online |
| PKO | Polska Kasa Opieki (Polish bank) |
| PKO | Peacekeeping Operation (various organizations) |
| PKO | Public Key Security Object |
| PKO | Palm Kernel Oil |
| PKO | Powszechna Kasa Oszczednosci (Polish bank) |
| PKO | Public Key Organization |