John Ros, 7th Baron Ros

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John Ros, 7th Baron Ros of Helmsley (c.1397 – 22 March 1421) was an English nobleman.

He was the eldest son of William Ros, 6th Baron Ros, and Margaret Fitzalan (d. 3 July 1438), the daughter of John FitzAlan, 1st Baron Arundel, by Eleanor Maltravers (d. 3 July 1438), younger daughter and coheir of Sir John Maltravers.^[2]

He served as a soldier of Henry V of England during the Hundred Years' War. Six years after the Battle of Agincourt, John participated in the Battle of Baugé. He was among the casualties along with his brother William Ros, Thomas of Lancaster, Duke of Clarence, the governor of Normandy and others. He was buried at the Belvoir Priory.