Ernest Chalmers Fahmy FRCSEd, FRCOG (28 November 1892 – 25 August 1982) was a Scottish obstetrician and gynaecologist. Shortly after qualifying in medicine, he played for the Scotland international rugby team on four occasions. He became an obstetrician and gynaecologist in Edinburgh and was a founder member of the British (later Royal) College of Obstetricians and Gynaecologists. He served as president of the Edinburgh Obstetrical Society.