Robin Halliday Macartney FRIBA (22 May 1911 – 4 October 1973) was a British architect, painter and illustrator. Today he is mainly remembered as the designer of four book covers for Agatha Christie, who immortalized him as "Mac" in her archaeological memoir Come, Tell Me How You Live. Macartney began his working life as excavation architect in the Near East and then entered the service of the Public Works Department. He was active in Cyprus, Sierra Leone and Nyasaland before retiring to Portugal. Two of his buildings have since become presidential residences.