Name
- Redern, Sigismund Ehrenreich, Count, Curator of the Academy of Sciences at Berlin1
- Renger, H- U-, Dutch Naturalist1
- Rieu, Giuliano1
- Ritter, John Jacob, M D, Professor at Frankfort University1
- Roebuck, John, MD; FRS1
- Romilly, Isaac, FRS1
- Rosencreutz, Johann Baptist, envoy, fl 1763-17921
- Sachetti-Barbosa, Joao Mendes1
- Salkeld, W-1
- Salner, Swedish Naturalist1
- Salvador, Joseph, FRS1
- Saunders, William, MD, FRS1
- Saunders, William, of Add MS 285421
- Schlabrendorff, Friedrich Ludwig1
- Schlosser, John Albert, Dr; FRS1
- Schomberg, Ralph, MD1
- Sciarroni, Giuseppe Giovanni1
- Scott, George, LLD, FRS1
- Sepp, Jan Christiaan, of Amsterdam1
- Seymer, Henry, of Hanford, county Dorset1