Li Cunxin (李存信) (862–902), originally Zhang Wuluo (張污落), was a military general in imperial China's Tang Dynasty, serving the Shatuo military leader Li Keyong, who adopted him as a son. Li Cunxin had a sour relationship with Li Cunxiao, another of Li Keyong's many adopted sons, and indirectly caused Li Cunxiao's defection.