Wat Chaiwatthanaram (Thai วัดไชยวัฒนาราม) is a buddhist temple in the city of Ayutthaya, Thailand. It is one of Ayutthaya's most beautiful temples and a major tourist attraction.

Construction of the temple began in 1630 at the request of King Prasatthong for the memorial of his mother's resident in that area. The temple's name literally means the Temple of long reign and glorious era. It was designed in Khmer style which popular in that time.