Algernon Bertram Freeman-Mitford, 1st Baron Redesdale, GCVO, KCB (24 February 1837 – 17 August 1916), of Batsford Park, Gloucestershire, and Birdhope Craig, Northumberland, was a British diplomat, collector and writer. He was nicknamed “Barty” and wrote the book Tales of Old Japan, published in 1871.