Robert Bertrand Sackville-West, 7th Baron Sackville DL (born 10 July 1958) is a British publisher, author and guardian of Knole House in Kent, which has been a Sackville house for 400 years and is now owned by the National Trust.
The eldest son of Hugh Rosslyn Inigo Sackville-West and Bridget Eleanor Cunliffe, he inherited the title of Baron Sackville on 27 March 2004 on the death of his uncle, Lionel Bertrand Sackville-West, 6th Baron Sackville.