| ōu | Europe |
| 欧 | Europe abbr. for 歐洲|欧洲 |
| 欧亚 | Asia and Europe Eurasian (continent) same as 歐亞|欧亚 |
| 欧亚大陆 | Eurasia |
| 欧仁 | Eugene (name) |
| 欧伯林 | Oberlin |
| 欧体 | Ouyang Style |
| 欧佩克 | OPEC Organization of the Petroleum Exporting Countries |
| 欧元 | Euro (currency) |
| 欧元区 | Eurozone |
| 欧共体 | abbr. for 歐洲共同體|欧洲共同体, European Community (old term for the EU, European Union) |
| 欧几里得 | Euclid of Alexandria (c. 300 BC), Greek geometer and author Elements 幾何原本|几何原本 |
| 欧几里德 | Euclid of Alexandria (c. 300 BC), Greek geometer and author of Elements 幾何原本|几何原本 |
| 欧分 | Eurocent |
| 欧化 | Europeanization; Europeanize; westernize |
| 欧吉桑 | uncle (Japanese loanword, respectful appellation for any older man) |
| 欧姆 | ohm |
| 欧姆定律 | ohm's law |
| 欧姆电阻 | ohmage; ohmic resistance; plain resistance |
| 欧姆表 | ohm gauge; ohmer |
| 欧姆计 | ohmmeter; mhometer; ohmer |