Sir David Elliott Spiby Blatherwick, KCMG OBE (born 13 July 1941), is a retired British diplomat. After joining the Foreign Office in 1964 he served in a number of diplomatic posts in Kuwait, Ireland, Egypt and at the United Nations in New York. He was appointed the British ambassador to Ireland from 1991 to 1995, and ambassador to Egypt from 1995 to 1999. Following his retirement he has served on the boards of a number of organisations.