Dr Mary Aylwin Marshall, known as Molly Cotton, OBE, FSA, Hon FBA (born 1902, died 1984) was a British archaeologist and former doctor, noted for her work in Iron Age Britain - particularly hill forts - and Roman Italy. She also trained archaeology students at the British School at Rome. In 1946, Cotton received an OBE for outstanding contributions to the war effort. In 1972, the Dr M. Aylwin Cotton Foundation was established to fund fellowships and publication grants for the study of archaeology. Molly Cotton was married to Dr Thomas Forrest Cotton, a Canadian cardiologist.