Stamata Revithi (; 1866 – after 1896) was a Greek woman who ran the 40-kilometre marathon during the 1896 Summer Olympics. The Games excluded women from competition, but Revithi insisted that she be allowed to run. Revithi ran one day after the men had completed the official race, and although she finished the marathon in approximately 5 hours and 30 minutes and found witnesses to sign their names and verify the running time, she was not allowed to enter the Panathinaiko Stadium at the end of the race. She intended to present her documentation to the Hellenic Olympic Committee in the hopes that they would recognize her achievement, but it is not known whether she did so. No known record survives of Revithi's life after her run.