Yijing (635–713 CE) is a Tang Dynasty Chinese Buddhist monk, originally named Zhang Wenming.

The written records of his 25-year travels contribute to the world knowledge of the ancient kingdom of Srivijaya, as well as providing information about the other kingdoms lying on the route between China and the Nālandā Buddhist university in India.

He is also responsible for the translation of a large number of Buddhist scriptures from Sanskrit into Chinese.

Yijing's full Buddhist title is "Tripiṭaka Dharma Master Yijing".

In some 19th-century publications, Yijing's name may appear as I Tsing, following an antiquated method of Chinese romanization.