Ain can mean:
- Ain, a department in the Auvergne-Rhône-Alpes region in the east of France named after:
- Ain (river), a river in eastern France
- Epsilon Tauri or Ain, an orange giant star
- Al Ain, a city in the United Arab Emirates
- Aín, a municipality in eastern Spain
| This disambiguation page lists articles associated with the title Ain.
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