Margaret Elaine Caldow OAM BEM, also known as Marg Caldow, is a former Australia netball international and a former England head coach. She represented Australia at the 1963, 1975 and the 1979 World Netball Championships, winning three gold medals. She captained Australia at the 1975 and 1979 tournaments. Between 2004 and 2007, Caldow served as head coach of England. She was the England head coach at both the 2006 Commonwealth Games and the 2007 World Netball Championships. Between 2013 and 2018, Caldow served as Lisa Alexander's assistant with Australia. In 1978 Caldow was awarded the British Empire Medal and in 2009 she was awarded the Medal of the Order of Australia.