Name
- Petit Thouars, Louis Marie Aubert du1
- Petrie, Anne, daughter of Captain M Flinders1
- Pistrucci, of Rome1
- Purdie, Robert1
- Raddi, Joseph, of Florence1
- Raffles, Sophia, Widow of Sir T S Raffles1
- Raffles, Thomas Stamford Bingley, Knight, colonial governor, 1781-18261
- Reeves, I-1
- Renouard, George Cecil, of Add MS 324411
- Reuss, W- F-, of New York1
- Rezende, Marquis de1
- Richard, Achille1
- Richardson, John, MD; of Add MS 324401
- Roeper, F-, MD, of Bâle1
- Ross, George Clark1
- Roxburgh, William, MD; of Add MS 324391
- Sabine, Edward, General RA, KCB, PRS1
- Sabine, Joseph, FRS1
- Sanctius de Sanctis, B-1
- Schiede, Wilhelm, of Jalapa, Vera Cruz1