| OLH | Old Harbor SeaPlane Base, Old Harbor, Alaska USA
| Others |
| OLH | Old La Honda
| Others |
| OLH | Old Lady Here
| Others |
| OLH | On Line Help
| Others |
| OLH | On-Line Help
| Others |
| OLH | Open Library of Humanities
| Others |
| OLH | Open Logo Hack
| Others |
| OLH | Oracle Loader for Hadoop
| Others |
| OLH | Our Lady of Hope
| Others |
| OLH | Our Lady of Humility
| Others |
| OLH | Our Lady of Humility Catholic School
| Others |
| OLH | Our Lady of the Hamptons
| Others |
| OLH | Our Lady of the Hills
| Others |
| OLH | Our Lady's Hospice
| Others |
| OLH | Outlook Helper
| Others |
| OLH | Ovine Luteinizing Hormone
| Others |