Otto Joachim Moltke (11 June 1770 – 1 February 1853) was a lawyer and government official.

He was the son of Adam Gottlob Moltke (1710–1792) and Sophie Hedevig von Raben (1733–1802).

His father was lensgreve til Bregentved and had exercised extensive political power during the reign of Frederick V. Moltke studied at the University of Copenhagen from 1786 and in 1788 became a legal candidate.

[1] He moved to Norway where he was appointed the County Governor of Bratsberg amt from 1798 until 1800.

[citation needed] Otto Joachim Moltke retired to Espe Hovedgård in the parish of Boeslunde, which he had acquired in 1810.