Family name 曹 (Cao 
, 曹 , Cáo 
) , globally, is a prevalent last name. The surname 曹 is characteristic of China, where it is a widespread surname, Cayman Islands, where it is a common surname, and Bermuda (explore the name in all countries). In absolute terms, it most frequently occurs in China, Vietnam, and the United States.
| 曹騰 2nd century Eastern Han dynasty eunuch official, CN (b. 100) |
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| 曹節 Chinese Han Dynasty official (died 181), CN (b. 101) |
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曹操 Chinese warlord and statesman (155–220), CN (b. 155) |
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曹仁 Chinese Han dynasty general (168–223), CN (b. 168) |
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曹丕 Cao Wei emperor (187-226), CN (b. 187) |
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曹彰 State of Cao Wei prince (died 223), CN (b. 190) |
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| 曹純 Chinese Han dynasty military officer (died 210), CN (b. 174) |
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| 曹昂 Chinese warlord Cao Cao's eldest son (c.177–197), CN (b. 177) |
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| 曹彪 prince of the Cao Wei state (195-251), CN (b. 195) |
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| 曹嵩 Eastern Han dynasty official (died 193), CN (b. 200) |
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| 曹節 Chinese Han dynasty empress (197-260), CN (b. 200) |
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| 曹豹 Eastern Han military officer (died 196), CN (b. 200) |
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| 曹叡 Chinese Cao Wei emperor from 226 to 239, CN (b. 205) |
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| 曹髦 Cao Wei emperor from 254 to 260, CN (b. 241) |
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曹参 Han dynasty chancellor, CN (b. 300) |
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