Iain Macleod
Iain Norman Macleod (11 November 1913 – 20 July 1970) was a British Conservative Party politician and government minister.
Iain MacDonald-Smith
Iain Somerled Macdonald-Smith (born 3 July 1945) is a British sailor and Olympic Champion. He competed at the 1968 Summer Olympics in Mexico City and won a gold medal in the Flying Dutchman class, together with Rodney Pattisson.