Ayutthaya, Ayudhya, or Ayuthia may refer to:
- Ayutthaya Kingdom, a Thai kingdom that existed from 1350 to 1767
- HTMS Sri Ayudhya, a ship of the Royal Thai Navy
- Si Ayutthaya Road, a road in downtown Bangkok
- Bank of Ayudhya, a Thai commercial bank
- Ayodhya, a city in Uttar Pradesh, India
| This disambiguation page lists articles associated with the title Ayutthaya.
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