Admiral Sir Reginald John James George Macdonald KCB KCSI (19 October 1820 – 15 December 1899) was a Royal Navy officer who went on to be Commander-in-Chief, East Indies Station.

[5] He served in the Eighth Xhosa War as Commander of HMS Ferret.

[6] He was appointed Second-in-Command of the Channel Fleet in 1872 and from 1873 he became the 21st chief of the Clan Macdonald of Clanranald.

[5] Promoted to rear-admiral, he was made Commander-in-Chief, East Indies Station with his flag in the armoured cruiser, HMS Undaunted, in 1875 and Commander-in-Chief, The Nore in 1879.

Adelaide Louisa Warren Venables-Vernon, daughter of 5th Baron Vernon.