OLH
| Acronym | Definition |
|---|---|
| OLH | on Line Help |
| OLH | On-Line Help (Athena) |
| OLH | Our Lady of the Hills (Kerrville, TX) |
| OLH | Ovine Luteinizing Hormone |
| OLH | Our Lady of the Hamptons (regional Catholic school; Southampton, New York) |
| OLH | OnLetterHead |
| OLH | Obesity-Linked Hypoventilation |