The meaning of the Acronym OPO is...

OPO is

• Overly Pissed Off

More Meanings For OPO:

• Order Pizza for Operator
• Psion OPL Object file
• Optical Parametric Oscillator
• Overly Pissed Off
• Organ Procurement Organization
• Organ Procurement Organization
• Owen, Patterson, & Owen
• Office Products Outlet
• Old Post Office
• Organ Procurement Organization
• Operational Performance Objective
• Orbiter Projects Office
• Owen, Patterson, & Owen
• Ovamboland People's Organization
• Porto, Portugal

OPO is also in:

• Adults
• African
• Airport Codes
• Assembly
• FBI Files
• FDA
• File Extensions
• Firms
• Hospitals
• Laboratory
• Law
• Military
• NASA
• Physics