Thomas West 9th Baron De La Warr and 6th Baron West KG (c. 1475 – 25 September 1554) was the eldest son of Thomas West 8th Baron De La Warr by his second wife Elizabeth Mortimer daughter of Sir Hugh Mortimer of Martley and Kyre Wyard Worcestershire by Eleanor Cornwall daughter of Sir Edmund Cornwall.West succeeded to his titles at the age of 50.