Robert James Blair Cunynghame of Cronan, FRCSEd, FRSE JP (13 January 1841 – 23 December 1903) was a prominent Scottish surgeon, physiologist and early forensic scientist in the late 19th century. He served as President of the Royal College of Surgeons of Edinburgh from 1891 to 1893. He is said to have had a calm beautiful face and his opinion was used as a benchmark to medical thought.