Names
- Noyes, Thomas, 1786-18601
- O'Reilly, John Boyle, 1844-18901
- Oppenheim, James, 1882-19321
- Osborne, John, 1929-19941
- Oudot, Charles-Franco̧is, 1755-18411
- Payne, John Howard, 1791-18521
- Phelps, William Lyon, 1865-19431
- Pigot, Hugh, 1721?-17921
- Pike, Nicolas, 1743-18191
- Porter, Fitz-John, 1822-19011
- Pupin, Michael, 1858-19351
- Rainer, Luise, 1910-20141
- Richter, Conrad, 1890-19681
- Roberts, Cecil, 1892-19761
- Robespierre, Maximilien, 1758-17941
- Robinson, Edwin Arlington, 1869-19351
- Rolfe, Frederick, 1860-19131
- Rolland, Romain, 1866-19441
- Roosevelt, Theodore, 1858-19191
- Saltus, Edgar, 1855-19211