The Xi'an Stele or the Jingjiao Stele, sometimes translated as the "Nestorian Stele," is a Tang Chinese stele erected in 781 that documents 150 years of early Christianity in China. It is a limestone block 279 centimetres high with text in both Chinese and Syriac describing the existence of Christian communities in several cities in northern China. It reveals that the initial Church of the East had met recognition by the Tang Emperor Taizong, due to efforts of the Christian missionary Alopen in 635. According to the stele, Alopen and his fellow Syriac missionaries came to China from Daqin in the ninth year of Emperor Taizong (635), bringing sacred books and images. The Church of the East monk Adam composed the text on the stele. Buried in 845, probably during religious suppression, the stele was not rediscovered until 1625. It is now in the Stele Forest in Xi'an.

A stele, or occasionally stela when derived from Latin, is a stone or wooden slab, generally taller than it is wide, erected in the ancient world as a monument. The surface of the stele often has text, ornamentation, or both. These may be inscribed, carved in relief, or painted.