Alexandra Sandra Fraser Gwyn, OC (17 May 1935 – 26 May 2000) was a Canadian journalist and writer.
She was born in St. John's, Newfoundland, the daughter of Claude Fraser and Ruth Harley.
After her father's death, her mother remarried and the family moved to Halifax, Nova Scotia where Sandra attended Sacred Heart Convent.
After graduating, she moved to London where she worked at the Institute of Contemporary Arts.
Richard Gwyn subsequently launched a literary award, the Winterset Award, in her memory to honour writers from Newfoundland and Labrador.