Wat Phra Sing (Thai: วัดพระสิงห์, Northern Thai: ), or sometimes spelled etymologically as Wat Phra Singh, is a Buddhist temple located on Tha Luang Road in Tambon Wiang, Mueang district, Chiang Rai Province in northern Thailand.

According to Jinakālmālīpakarna, the Buddharupa Phra Buddha Sihing [th] (known shortly as Phra Singh) was brought from Kamphaeng Phet to Chiang Mai by the ruler of Chiang Rai and brother of Phaya Keu Na [th], Thao Maha Brahma.

Moreover, Thao Maha Brahma ordered a replica of Phra Singh to be created at Koh Don Thaen (เกาะดอนแท่น) in Chiang Saen.

Thao Maha Brahma, who could not stand Phaya Saen Mueang Ma taking the throne, battled over Chiang Mai but failed.

Phra Singh Luang (พระสิงห์หลวง) is the main Buddharupa in the ubosot, posing in Maravijaya attitude.