Cao Yong (died 229) was a prince in the state of Cao Wei in the Three Kingdoms period of China. He was a son of Cao Pi, the first emperor of Wei. His mother, Consort Su (èÂÂ姬), was a concubine of Cao Pi. He was enfeoffed as the Duke of Huainan (æ·®åÂÂå ¬) in 221, with his dukedom in Jiujiang Commandery (ä¹Âæ±Âé¡). In 222, he was elevated to the status of Prince of Huainan (æ·®åÂÂçÂÂ). A year later, his title was changed to Prince of Chen (é³çÂÂ). In 225, his title was changed again to Prince of Handan (é¯é²çÂÂ). He died in 229 during the reign of his half-brother Cao Rui. He had no offspring.
In 231, since Cao Yong had no descendants, Cao Rui designated Cao Wen (æ¹溫), a son of Cao Kai (æ¹楷) and grandson of Cao Zhang, as Cao Yong's heir; Cao Wen thus became the new Prince of Handan. In 232, Cao Wen's title was changed to Prince of Luyang (é¯é½çÂÂ). In the reigns of the subsequent Wei emperors, the number of taxable households in Cao Wen's princedom increased until it reached 4,400.