Captain John Dundas Cochrane (14 February 1793 – 12 August 1825) was a Scottish officer in the Royal Navy, traveller and explorer.
After being placed on half-pay by the Royal Navy, following a short career at sea, John Dundas Cochrane made journeys into Spain and Portugal, before applying to the Admiralty to explore the River Niger in Africa.
After returning to England, John Dundas Cochrane published an account of his travels in his Narrative of a Pedestrian Journey through Russian and Siberian Tartary to the Frontiers of China, the Frozen Sea and Kamtchatka.
In June 1824, he travelled to South America, possibly to join his cousin Charles Stuart Cochrane who was involved in Simon Bolivar's struggles for independence.
After the death of John Dundas, she returned to St Petersburg to live in Rikord's household in 1827, and there met and married (October 1828) Pyotr Anjou, an Arctic explorer and Russian admiral.