The Royal College of Surgeons of England (RCS England) is an independent professional body and registered charity that promotes and advances standards of surgical care for patients, and regulates surgery and dentistry in England and Wales. The college is located at Lincoln's Inn Fields in London. It publishes multiple medical journals including the Annals of the Royal College of Surgeons of England, the Faculty Dental Journal, and the Bulletin of the Royal College of Surgeons of England.

The origins of the college date to the fourteenth century with the foundation of the "Guild of Surgeons Within the City of London". Certain sources date this as occurring in 1368. There was an ongoing dispute between the surgeons and barber surgeons until an agreement was signed between them in 1493, giving the fellowship of surgeons the power of incorporation. This union was formalised further in 1540 by Henry VIII between the Worshipful Company of Barbers (incorporated 1462) and the Guild of Surgeons to form the Company of Barber-Surgeons. In 1745 the surgeons broke away from the barbers to form the Company of Surgeons. In 1800 the company was granted a royal charter to become the Royal College of Surgeons in London. A further charter in 1843 granted it the present title of the Royal College of Surgeons of England.

The correct way to address a member or fellow of the Royal College of Surgeons is to use the title Mr, Miss, Mrs, Ms, or Mx (not Dr). This system (which applies only to surgeons, not physicians) has its origins in the 16th century, when surgeons were barber-surgeons and did not have a medical degree (or indeed any formal qualification), unlike physicians, who, by the 18th century, held a university medical degree and could thus be referred to as "Doctor". ^{[citation needed]}

By the time the College of Surgeons received its royal charter in 1800, the Royal College of Physicians were insisting that candidates for membership of the College of Surgeons must first have a medical degree. Therefore, the ensuing years saw aspiring surgeons having to study medicine first and hence receive the title 'doctor'. Thereafter, having obtained the diploma of Member or Fellow of the Royal College of Surgeons he would revert to the title "Mr" as a snub to the RCP. Nowadays the title "Mr" is used by Members of the college who have passed the diploma MRCS examination and the college addresses Members as "Mr" or "Ms".

In Sir Arthur Conan Doyle's The Hound of the Baskervilles, the distinction is made in the following conversation:

"Come, come, we are not so far wrong after all," said Holmes. "And now, Dr. James Mortimer—"

"Mister, sir, Mister—a humble M.R.C.S."

Despite Mortimer's correction, he is referred to as "Dr. Mortimer" throughout the story.