Wat Mahathat Yuwarajarangsarit Rajaworamahavihara is a Buddhist temple in Bangkok, Thailand. It is one of the 10 royal temples of the highest class in Bangkok.
Built during Ayutthaya period, the temple was then known as Wat Salak. Soon after Bangkok was established as the capital of Siam, the temple became strategically situated in between the newly-built Grand Palace and Front Palace (residence of the vice-king). As a result, the temple was used for royal ceremonies and funerals. Throughout the past two centuries, the temple has been renovated and elevated in status by many Thai kings and royalties. It became the Wat Mahathat of Bangkok in 1803 and was given its current name in 1996. The temple is also home to Vipassana Medidation centre.