| OAH | Office of Administration Hearings | 行政听证会办公室 |
| OAH | Organization of American Historians | 美国历史学家组织 |
| OAH | Office of Administrative Hearings | 行政听证办公室 |
| OAH | Orcs and Humans (Warcraft I) | 兽人与人类（魔兽争霸I） |
| OAH | Obvious As Hell | 明显如地狱 |
| OAH | ovarian androgenic hyperfunction | 卵巢雄激素功能亢进 |
| OAH | o-aminohippuric acid | 邻氨基马尿酸 |
| OAH | Overall Height | 总高度 |
| OAH | Office of Administrative Hearings (Washington) | 行政听证会办公室（华盛顿） |
| OAH | Order After Hearing | 听证后的命令 |
| OAH | Optus at Home | Optus在家 |
| OAH | Omnipotent Author Hammerspace | 万能作者Hammerspace |