HMS Marlborough was a 74-gun third rate ship of the line of the Royal Navy, launched on 22 June 1807 at Deptford.

[1] In 1807, she helped escort the Portuguese royal family in its flight from Portugal to Brazil.

In 1812 Marlborough became the flagship to Rear-Admiral Sir George Cockburn off Cadiz, from where she went to the North America Station and took part in the capture of Washington in August 1814.

[2] Marlborough was laid up in Ordinary at Portsmouth from 1816 and broken up there in July 1835.

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