Pusyamitra Sunga (died 151 BCE, r. 185–151 BCE) is the founder and first King of the Sunga Dynasty in northern India.

Pusyamitra Sunga was originally a Senapati (General) of the Mauryan empire.

In 185 or 180 BCE, he assassinates the last Mauryan Emperor (Brhadrata) during an army review, and proclaims himself King.

He then performs the Ashwamedha Yajna and brings much of Northern India under his rule.

Inscriptions of the Shungas have been found as far as the Jalandhar in the Punjab, and the Divyavadana mentions that his rule extended as far as Sagala (Sialkot).