Joachim Hartvig Johan von Barner (1699–1768) was a Danish-German military officer and government official.
[1] Barner was born in Mecklenburg which was part of the Holy Roman Empire, but moved to Denmark in his youth.
In 1746, he was appointed as the Diocesan Governor of Christianssand stiftamt (and simultaneously serving as the County Governor of Nedenæs amt).
He was then transferred to Denmark where he served as the County Governor of Kalundborg, Dragsholm, Sæbygaard and Holbaek counties.
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