Pieter baron Melvill van Carnbee (2 April 1743 – 17 May 1826) was a Dutch naval officer and nobleman who rose to the rank of vice admiral.

He also had to oversee the Dutch line of defence and the major rivers whilst French troops under Charles Pichegru were advancing.

However, in winter 1795, the rivers froze over and Melvill's ships were trapped, meaning he could do nothing to prevent the French from conquering Holland, Utrecht and Zeeland.

A supporter of the Prince of Orange, he left the navy on 24 February 1795 after the formation of the Batavian Republic Melvill was later released from his oath by William V, Prince of Orange and on 16 July 1806 king Louis Bonaparte made him Staatsraad in charge of the navy section, as well as a Commander of the Order of the Union.

According to a letter in the Daendels family archive, Melvil was at that moment (on 17 February 1807) "aux Grandes Indes", that is in the Dutch East Indies.