- New York Institute for the Education of the Blind1
- New York Public Library1
- New republic (New York, N.Y.)1
- Newton, Isaac, 1642-17271
- Newtown High School3
- Niccolò di ser Sozzo Tegliacci, active 1334-13631
- Nicholas II, Emperor of Russia, 1868-19181
- Nicholas IV, Pope, 1227-12921
- Nicolas d'Orbelles1
- Norman, Dorothy, 1905-19971
- Norris, John1
- Norzi, Avi'ad Sar Shalom1
- Notre Dame Academy (Staten Island, N.Y.)1
- Notre Dame School1
- Omar Khayyam1
- Osborne, Lithgow and Mrs.10
- Ottman, William1
- Pace Business School1
- Parran, Thomas, Jr., 1892-19682
- Parsons, William Barclay, 1859-19321
- Passaic Valley High School (Little Falls, N.J.)1
- Pazheskīĭ Ego Imperatorskago Velichestva korpus (Russia)1
- Peekskill High School (Peekskill, N.Y.)1
- Pell, Herbert Claiborne, 1884-19611
- Pequannock Township High School (Pequannock, N.Y.)1
- Pereyra de Paiva, Moses1
- Perkins, Frances, 1880-196531
- Peskin, M.1
- Peter Lombard, Bishop of Paris, approximately 1100-11602
- Phillips, James E.1
- Piscataway Township High School (Piscataway, N.Y.)1
- Pistohlkors, Alexander Erikovich3
- Pius II, Pope, 1405-14641
- Plimpton, Francis T. P. (Francis Taylor Pearsons), 1900-19831
- Plimpton, George A. (George Arthur), 1855-19366
- Poletti, Charles, 1903-20024
- Pool, David de Sola and Mrs.2
- Pope, Generoso, 1891-19506
- Port Richmond High School (Staten Island, New York, N.Y.)4
- Port Washington High School (Port Washington, N.Y.)1
- Potofsky, Jacob S.1
- Potresov, S. V. (Sergi͡eĭ Viktorovich), 1870-19531
- Powell, Dawn1
- Prendergast, Michael H.1
- Priscian, active approximately 500-5302
- Prospect Heights High School (Brooklyn, New York, N.Y.)1
- Pseudo-Boethius1
- Pseudo-Cicero1
- Pseudo-Seneca1
- Ptolemy, active 2nd century1
- Pulitzer, Edith1
- Pulitzer, Joseph, 1847-191112
- Pulitzer, Ralph, 1879-19391
- Queen of the Rosary1
- Rabba, Eliyah ben Menaḥem1
- Rabba, Eliyahu ben Menaḥem1
- Ralph J. Osgood High School (Kings Park, N.Y.)1
- Rashi, 1040-11051
- Regis High School (New York, N.Y.)1
- Reisch, Gregor, -15252