Rujing is a city located in Indonesia.
The name Rujing is also associated with Tiāntóng Rújìng (1163–1228), a Caodong Buddhist monk who resided at Jìngdé Temple on Tiāntóng Mountain in the Yinzhou District of Ningbo. He was a significant religious figure who provided dharma transmission to both Jakuen, an early Sōtō monk, and Dōgen, the founder of Sōtō Zen.