R.A.S. Royal Asiatic Society.
r.c. Right centre.
R.C. Roman Catholic; Red Cross.
R.C.M. Royal College of Music.
R.C.P. Royal College of Preceptors.
R.C.S. Royal College of Surgeons.
R.D. Rural Dean; Royal Dragoons.
R.E. Royal Engineers.
Rec. Recipe.
recd. Received.