Alia or ALIA may refer to:
- Alia (name), a list of people with the surname or given name
- Aaliyah (1979–2001), American R&B singer
- Aliya (disambiguation)
- Aliyah (disambiguation)
- Allia (moth), a genus in the family Noctuidae
- Allia, a tributary of the River Tiber, Italy
- Battle of the Allia, fought c. 390 BC between the Romans and the Senones
- Alya (disambiguation)
| This disambiguation page lists articles associated with the title Alia.
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