OPOA
| Acronym | Definition |
|---|---|
| OPOA | Oregon Peace Officers Association |
| OPOA | Oakland Police Officer's Association (Oakland, CA) |
| OPOA | Ojibwa Property Owners Association (Weidman, MI) |
| OPOA | Ohio Peak Oil Action |
| OPOA | Oroville Police Officers Association (Oroville, WA) |
| OPOA | Optical Parametric Oscillator Amplifier (optical technology) |