Marquis Cornwallis (ship)

Marquis Cornwallis may refer to a number of ships named for Charles Cornwallis, 1st Marquess Cornwallis:
 * Marquis Cornwallis, a 654 burthen ton merchantman that made a voyage transporting convicts to Australia.
 * Marquis Cornwallis, was an East Indiaman launched in 1801, that the Royal Navy purchased in 1805 and commissioned as HMS Cornwallis (1805), renamed Akbar in 1811, and sold in the 1860s.
 * Marquis Cornwallis was a brig launched at Sunderland. She traded widely, to the West Indies, the Iberian peninsula, and the Baltic. The American privateer Chasseur captured her in 1814 but released her as a cartel. She was wrecked in 1823.