| OLO | Object Long Object
| Others |
| OLO | Office of Legislative Oversight
| Others |
| OLO | Ohio Light Opera
| Others |
| OLO | Oligonucleotide Loop Oligonucleotide
| Others |
| OLO | Olives Lemons and Oregano
| Others |
| OLO | On Line Observatory
| Others |
| OLO | On Line Operation
| Others |
| OLO | On Line Optimization
| Others |
| OLO | On Line Ordering
| Others |
| OLO | On-Line Ordering
| Others |
| OLO | One Life Only
| Others |
| OLO | Online Liquor Ordering
| Others |
| OLO | Only Laughed Once
| Others |
| OLO | Only Losers Obey
| Others |
| OLO | Ontario l Original
| Others |
| OLO | Ontario L'Orignal Railway
| Others |
| OLO | Ontario L'Orignal Railway Incorporated
| Others |
| OLO | Optical Line Outlet
| Others |
| OLO | Optical Local Oscillator
| Others |
| OLO | Orange Lutheran Online
| Others |
| OLO | Orangutangs Leading Orchestras
| Others |
| OLO | Other License Operator
| Others |
| OLO | Other Licensed Operator
| Others |
| OLO | Other Licensed Operators
| Others |
| OLO | Other Local Operator
| Others |
| OLO | Our Last One
| Others |