Name
- Preston, Thomas, of Add MS 285411
- Price, Richard, DD, FRS; of Add MS 285411
- Prince, George, Secretary to the Natural History Society1
- Prizier, J- W-, Conseiller de la Chambre des Finances du Roi de Suede1
- Pryce, William, MD, Mineralogist1
- Pulteney, Richard, botanist1
- Radcliffe, Benjamin1
- Randall, E-1
- Randolph, Thomas, President of Corpus Christi College, Oxford1
- Rashleigh, of Add MS 285411
- Ravaud, David, FRS1
- Reade, Henry, FRS1
- Rebello, Alves, Mineralogist1
- Redern, Sigismund Ehrenreich, Count, Curator of the Academy of Sciences at Berlin1
- Rieu, Giuliano1
- Ritter, John Jacob, M D, Professor at Frankfort University1
- Roebuck, John, MD; FRS1
- Rosencreutz, Johann Baptist, envoy, fl 1763-17921
- Sachetti-Barbosa, Joao Mendes1
- Varenne de Beost1