Lai Ji (來濟) (610–662) was an official of the Chinese dynasty Tang Dynasty, serving as a chancellor during the reign of Emperor Gaozong. He later offended Emperor Gaozong by opposing the ascension of Emperor Gaozong's second wife Empress Wu (later known as Wu Zetian) and was exiled to be a prefect in the extreme western part of the state. In 662, he died in battle while defending his prefecture against a Western Tujue attack. His brother Lai Heng also served as a chancellor during Emperor Gaozong's reign.