Reginald Windsor Sackville, 7th Earl De La Warr (21 February 1817 – 5 January 1896), styled The Honourable Reginald West until 1843, as The Honourable Reginald Sackville between 1843 and 1870 and known as the Lord Buckhurst between 1870 and 1873, was a British clergyman and landowner.