Alexandra Sandra Fraser Gwyn, OC (May 17, 1935 – May 26, 2000) was a Canadian journalist and writer.
Born in St. John's, Newfoundland, the daughter of Claude Fraser and Ruth Harley, she was educated at Dalhousie University graduating in 1955. During 1970s, she was the Ottawa editor for Saturday Night.
In 2000, she was made an Officer of the Order of Canada.
She married Richard Gwyn in 1958.
She died in 2000 after a five-year fight against breast cancer. Richard Gwyn subsequently launched a literary award, the Winterset Award, in her memory to honour writers from Newfoundland and Labrador.