OPO
Appearance
"OPO" can refer to:
- Optical parametric oscillator
- OPO is the IATA airport code of Francisco Sá Carneiro Airport, Porto, Portugal
- Organ procurement organization, which helps to arrange organ donation
- One Peace Organization, the first "Virtual Intelligence Comunity" non-governmental in Italy. The aims are: "Global Shering of Knowledge", strengthen the activity of analysis and "Information Peacekeeping", because only the sharing of knowledge and availability of open source represents the first real weapons with which resolve conflicts to own advantage.