Wat Phra Si Rattana Mahathat

Wat Phra Sri Rattana Mahathat (Thai: วัดพระศรีรัตนมหาธาตุ; "Temple of the Great Jewelled Reliquary"), colloquially referred to as Wat-Phra-Sri (Thai: วัดพระศรี) or Wat Yai (Thai: วัดใหญ่; "Big Temple"), is a Buddhist temple (wat) in Phitsanulok Province, Thailand, where it is located on east bank of Nan River, near Naresuan Bridge and opposite Phitsanulok Provincial Hall.

The temple is famous for its gold-covered statue of the Buddha, known as Phra Phuttha Chinnarat (Thai: พระพุทธชินราช; "King of Victory").

The temple's large vihara has an immense main entrance with mother-of-pearl inserts donated by King Boromakot in 1756.

All high value objects reflect the history, archaeology, culture, customs and traditions of Phitsanulok and vicinity towns from the past to present.

The significant objects displayed such as Buddha statues, votive tablets, Sangkhalok ware, Chinese blue and white ceramics, Chinese painted enamel ware, Thai ceramics with five colours (Benjarong) and with gold painted enamels (Lai Nam Thong), crystal glassware, miniature of threes with gold and silver leaves presented by King Bhumibol Adulyadej and Queen Sirikit and all members of his royal family.

Festivals often take place on the temple grounds, including the annual Phra Phuttha Chinnarat Fair.