Professor William Thomas Ritchie FRSE PRCPE LLD OBE (3 November 1873 – 7 February 1945) was a Scottish cardiologist who served as President of the Royal College of Physicians of Edinburgh from 1935 to 1937.
He was born on 3 November 1873 in Edinburgh, the son of Robert Brown Ritchie (1829-1906) and his wife Alicia Julia Scarth.
His proposers were George Alexander Gibson, Diarmid Noel Paton, Daniel John Cunningham and Edward Albert Sharpey-Schafer.
[5] In the First World War, he served as Medical Officer attached to the 1/3rd Scottish Horse and then oversaw the 27th General Hospital in Egypt.
[6] He died at his home on Barnshot Road in Colinton on 7 February 1945.