| HOH | a battle during the Napoleonic Wars (1800) |
|---|---|
| HOH | a German noble family that ruled Brandenburg and Prussia |
| HOH | 1871-1919 |
| HOH | small genus of shrubs and small trees of New Zealand: lacebarks |
| HOH | small tree or shrub of New Zealand having a profusion of axillary clusters of honey-scented paper-white flowers and whose bark is used for cordage |