Frederik Christian Kaas (1 December 1727 – 28 March 1804)[1] was a Danish naval officer and landowner.

A quarantine period for the ship returning from Salee, Morocco was applied when Havfruen stopped at Lisbon.

[1] In 1765 he led another mission to Morocco using an armed merchant ship specifically flying the danish royal standard.

In this ship he carried the British Duchess of Gloucester from Copenhagen, where she had been visiting her sister, Queen Caroline Mathilde, to Mecklenburg in Pommerania.

He died 18 March 1804 in Copenhagen whilst still employed at the admiralty, with the funeral service in the chapel of Holmen's Church on 4 April.