| OLG | Obnoxious Little Goofball
| Others |
| OLG | Office Link Group
| Others |
| OLG | Office of Local Government
| Others |
| OLG | Oh Lover Girl
| Others |
| OLG | Oil Level Gauge
| Others |
| OLG | Old Lady Gang
| Others |
| OLG | On Line Gambling
| Others |
| OLG | On Line Gaming
| Others |
| OLG | On-Line Gamers
| Others |
| OLG | On-Line Gateway
| Others |
| OLG | On-Line Grant
| Others |
| OLG | Online Learner's Guide
| Others |
| OLG | Only Losers Gamble
| Others |
| OLG | Ontario Lottery and Gaming
| Others |
| OLG | Ontario Lottery and Gaming (Corporation)
| Others |
| OLG | Ontario Lottery and Gaming corporation
| Others |
| OLG | Open Learning Group
| Others |
| OLG | Our Lady Of Grace
| Others |
| OLG | Our Lady Of Guadalupe
| Others |
| OLG | Our Lady of the Greenwood
| Others |
| OLG | Our Lady of the Greenwood Church
| Others |