Cao Rui, ch 曹叡, py. cáo rùi, wg. Ts'ao-Jui (between 203 and 205-239) was the son of Cao Pi and the second emperor of the Kingdom of Wei. He is also known as the Emperor Ming of Wei, ch. 魏明帝, py. wèi míng dì, wg. Wei Ming-ti
| Family name | Cao (曹 py. cáo) in Chinese |
| Given name | Rui (叡 py. rùi) |
| Era name | Taihe (太和 tài hé) 227-233 Qinglong (青龍 qīng lóng) 233-237 Jingchu (景初 jĭng chū) 237-239 |
| Father | Cao Pi |
| Mother | consort Yin |
| Wife | |
| Major concubines | |
| Children | childless |
| Duration of reign | 227 to 239 |
| Tomb | |
| Temple name | |
| Courtesy name | ch.元仲, py. yuán zhòng, wg. yüan chung |
| Posthumous name | 明 (py. míng, wg. ming) , literary meaning: "brillant" |
| Preceded by: Cao Pi |
Kingdom of Wei | Succeeded by: Cao Fang |