| 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 |