Wat Arun (Temple of the Dawn, perhaps so named because the first light of morning is reflected off the surface of the temple with a pearly iridescence) is a buddhist temple (wat) in Bangkok, Thailand. The temple is located in the Bangkok Yai district, on the west bank of the Chao Phraya River. The full name of the temple is Wat Arunratchawararam Ratchaworamahavihara.