Margaretha "Greta" Brita Duréel (died in June 1696), was a Swedish noble. She was the central figure in the stora juvelsveket (The Great Jewel Fraud), a fraud committed against the Swedish National Bank by a group of women in the 1690s. Greta Duréel was the daughter of the noble and married the noble courtier Arvid Appelgren in 1683. Greta Duréel and her female accomplices acquired large sums from the bank using this method: Duréel herself about 60,000 dir., Margaretha Hoffvenia 30,000, Maria Eriksdotter 3,000—6,000 and Greta Appelgren, née Törnsköld, 3,000 dir.