Professor Robert Cleghorn FRSE FFPSG PRMS was a Scottish physician and pharmacologist.
He studied Medicine at Edinburgh University graduating Doctor of Medicine in 1783.
Little is known of his early life. He is thought to have been born around 1755. He was in general medical practice as a General Practice in Glasgow from 1785, then in 1788 begins lecturing in Medicine then in 1791 begins lecturing in Chemistry.
In 1818 he is awarded a professorship in Chemistry and Materia Medica at Glasgow University, a role continued until his death.
As a physician he worked at the Glasgow Royal Mental Hospital, and Glasgow Royal Infirmary (previously known as the Old Town Hospital). He was elected a Fellow of the Royal Society of Edinburgh in 1790, his proposers being Andrew Dalzel, Dugald Stewart and James Gregory.
He died in Shawfield House near Rutherglen on 18 June 1821. President of the Royal College of Physicians and Surgeons of Glasgow 1788 -1791
Honorary President of the Royal Medical Society in 1781 and full President in 1783.