The Gov. Daniel Dunklin's Grave State Historic Site is a historic site, state park, and recreation area in Herculaneum, Missouri. It is located 30 miles outside of St. Louis.

Created in 1965, the Gov. Daniel Dunklin's Grave State Historic Site was established in order to preserve the grave site of the former Missouri governor, Daniel Dunklin. Governor Dunklin was the fifth governor of Missouri who took office in 1843 until his death in 1844. The creation of the state park was a part of the statute created by the state that aims to mark every grave of a former state governor.

Visitors of the Gov. Daniel Dunklin's Grave State Historic Site can enjoy the site as a quiet place to spend a day.