| Acronym | Definition |
|---|
| OLO➣Ohio Light Opera |
| OLO➣Online Ordering |
| OLO➣Opera Lyra Ottawa (Canada) |
| OLO➣Other Licensed Operator |
| OLO➣Olomouc, Czech Republic (airport code) |
| OLO➣Office of the Leader of the Opposition (Canadian Parliament) |
| OLO➣Oeufs Lait Oranges (French: eggs, milk and oranges, a Canadian charity assisting pregnant women) |
| OLO➣Orange Lutheran Online (Orange Lutheran High School, Orange, CA) |
| OLO➣Other Local Operator |
| OLO➣Obligations Linéaires Ordinaires (French: Linear Ordinary Bonds) |
| OLO➣Only Laughed Once |
| OLO➣Optical Local Oscillator |
| OLO➣Ontario l'Original Railway |
| OLO➣Optimal Linear Ordering |
| OLO➣Old Lewesians Organisation (UK) |
| OLO➣Other Learning Opportunities (El Paso, TX) |