| OPCW | Or The Prohibition Of Chemical Weapons 
| Others |
| OPCW | Or The Prohibiton Of Chemical Weapons
| Others |
| OPCW | Organisation for Prohibition of Chemical Weapons
| Others |
| OPCW | Organisation for the Prohibition of Chemical Weapons
| Others |
| OPCW | Organization for Prohibition of Chemical Weapons
| Others |
| OPCW | Organization for the Prohibition of Chemical Weapons
| Others |