Admiral Sir William Christopher Pakenham, GCB, KCMG, KCVO (10 July 1861 – 28 July 1933) was a senior Royal Navy officer. He served as a British observer with the Imperial Japanese Navy during the Russo-Japanese War; during the First World War he commanded the 2nd Battle Cruiser Squadron at the Battle of Jutland, and from December 1916 was Commander-in-Chief of the Battle Cruiser Fleet.