Sir Iwan Geoffrey Raikes (21 April 1921 – 27 December 2011) was a former Royal Navy officer who became Naval Secretary.

Born the son of Admiral Sir Robert Raikes and educated at the Royal Naval College, Dartmouth, Raikes joined the Royal Navy in 1935 and decided to specialise in submarines.

[1] He was appointed deputy director of Undersurface Warfare in 1962, Director of Plans and Operations on the staff of Commander-in-Chief, Far East in 1965 and Captain of the destroyer HMS Kent in 1968.

[1] Promoted to rear-admiral, he went on to be Naval Secretary in 1970; after being promoted to vice-admiral he became Flag Officer First Flotilla in 1973 and Flag Officer Submarines and Commander of Submarines, Eastern Atlantic Area in 1974 before retiring in January 1977.

[1][3] In retirement he became Chairman of the United Usk Fishermen's Association[4] as well as Deputy Lieutenant of Powys.