Wat Chaiwatthanaram (Thai: วัดไชยวัฒนาราม) is a Buddhist temple in the city of Ayutthaya, Thailand, on the west bank of the Chao Phraya River, outside Ayutthaya island. It is one of Ayutthaya's most well known temples and a major tourist attraction.
Wat Chaiwatthanaram lies on the west bank of Chao Phraya River, south west of the old city of Ayutthaya. It is a large compound and is a UNESCO World Heritage Site. It can be reached by road or by boat.