He Jin (dies 189) is the elder half-brother of Empress He, consort to Emperor Ling of the late Eastern Han Dynasty in China.

He shares power with his sister as coregent in 189, following the death of Emperor Ling.

In the ensuing struggle with the influential eunuch faction for power, He Jin is assassinated.

His death allows Dong Zhuo to seize military control over the capital Luoyang and take control of the imperial court.

The subsequent breakdown of central command brings about the beginning of massive civil wars which lead to the formation of the era known as the Three Kingdoms.