| OH | open hole | 裸（井）眼 |
| OH | Off Hook | （调制解调器）摘机 |
| OH | Overhaul | 大修 |
| OH | Overhang | 外悬（包括前悬和后悬） |
| OH | Oakwood Homes Corporation | Oakwood Homes公司 |
| OH | Oracle Home | Oracle主页 |
| OH | Hyroxide ion | Hyroxide离子 |
| OH | Organized Home | 有组织的家庭 |
| OH | Oracle Help | Oracle帮助 |
| OH | Oak Hill | 橡树山 |
| OH | Old Hickory | 旧山核桃 |
| OH | Oxygen And Hydrogen | 氧气和氢气 |
| OH | Osteopathic Hospitals (journal) | 骨病医院（期刊） |
| OH | Old Harrovian (alumni of Harrow School, UK) | 老哈罗维安（英国哈罗学校校友） |
| OH | Alcohol (functional group) | 酒精（官能团） |
| OH | hydroxy | 羟基 |
| OH | open heart | 敞开心扉 |
| OH | Oral History | 口述历史 |
| OH | Occupational history | 职业历史 |
| OH | obstructive hypopnea | 阻塞性低通气 |
| OH | Ozone House | 臭氧室 |
| OH | orthostatic hypotension | 直立性低血压 |
| OH | Over Heat | 过热 |
| OH | orthopaedic nurse | 骨科护士 |
| OH | Original Hostage | 原始人质 |
| OH | occipital horn | 枕角 |
| OH | hydroxycorticosteroids | 羟基皮质类固醇 |
| OH | outpatient hospital | 门诊医院 |
| OH | Office Hour | 办公时间 |
| OH | Other Half | 其他一半 |
| OH | Operating Hour | 工作小时数 |
| OH | Organic Clays of Medium to High Plasticity (soil type) | 中塑性至高塑性有机粘土（土壤类型） |
| OH | Optimal Hyperplane | 最佳超平面 |
| OH | Outside Hitter (volleyball) | 外线击球手（排球） |
| OH | Finland (international aircraft code) | 芬兰（国际飞机代码） |
| OH | Operational Handbook (USMC) | 操作手册（USMC） |
| OH | Orthopedic Handicap | 骨科残疾 |
| OH | Operator Handled | 操作员已处理 |
| OH | Orleans House (Office Building in Liverpool, UK) | 奥尔良大厦（英国利物浦办公楼） |
| OH | Off Hand (gaming) | 离手（游戏） |
| OH | Organ Harvesting | 器官收获 |
| OH | Ottawa Hydro | 渥太华水电 |
| OH | Olfactory Hallucinations (psychiatric assessment) | 嗅觉幻觉（精神病评估） |
| OH | Hospitallers Brothers of St. John of God (religious order) | 上帝的圣约翰兄弟医院（宗教秩序） |
| OH | Out-of-House | 外出 |
| OH | Object-To-Hex | 对象到十六进制 |
| OH | Office Hour(s) | 办公时间 |
| OH | Orthostatic Hypertension | 静止性高血压 |
| OH | Opposite Hand | 相反的手 |
| OH | Otaku Haven (anime) | Otaku Haven（动漫） |
| OH | Hydroxyl | 羟基 |
| OH | omni hora | 全喉 |
| OH | Occupational Health | 职业卫生 |
| OH | Other Half (band) | 另一半（频带） |
| OH | Observation Helicopter | 观测直升机 |
| OH | Orgiastic High | 高潮 |
| OH | Hydroxide | 氢氧化物 |
| OH | Overheard (Twitter) | 耳闻（Twitter） |
| OH | Overheat | 过热 |
| OH | Ohio (US postal abbreviation) | 俄亥俄州（美国邮政缩写） |
| OH | Outer Housing | 外壳 |
| OH | Hydroxyl Radical | 羟基自由基 |
| OH | On Hand | 手头上的 |
| OH | On Hold | 保留 |