Qin Kai (simplified Chinese: 秦开; traditional Chinese: 秦開), was a general of the Kingdom of Yan during the Warring States period of China. He was at one time sent by Yan to Donghu as a hostage. After returning to Yan, around 300 BC, he defeated the Donghu and conquered Liaodong Peninsula, wresting it from Gojoseon.

Qin Kai was the grandfather of Qin Wuyang.^{[citation needed]}

• Gojoseon–Yan War

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