Margaret Anne Ewing (née McAdam, formerly Bain; 1 September 1945 – 21 March 2006) was a Scottish teacher, journalist and politician. She served as a Scottish National Party (SNP) Member of Parliament for East Dunbartonshire from 1974 to 1979 and Moray from 1987 to 2001, and was the Member of the Scottish Parliament (MSP) for Moray from 1999 until 2006. Ewing was Deputy Leader of the Scottish National Party from 1984 to 1987 and leader of the SNP parliamentary group in the House of Commons from 1987 to 1999. She was a candidate for the SNP leadership in 1990.