- Neill, Lou Anne1
- Neuman, Herman1
- New Art Wind Quintet2
- New York Brass Quintet1
- New York City Symphony1
- New York Philharmonic5
- Nijinska, Bronislava, 1891-19721
- Noellner, Walter1
- Nordli, Douglas1
- Nuclear Electric13
- Oldfather, Christopher1
- Olive Garden Restaurants13
- Ondrejka, Ronald1
- Oppenheim, David, 1922-20071
- Oppens, Ursula1
- Orbón, Julián, 1925-19911
- Orchestre philharmonique de l'O.R.T.F1
- Orcutt, Eugene1
- Orquesta Sinfónica de Puerto Rico3
- Ossadnik, Alex1
- Ostroff, Esther12
- Ostryniec, James P1
- Overton, Hall, 1920-19721
- Oxman, Ralph2
- PGM International5
- Pabón, Roselín1
- Pachman, Maurice2
- Palmer, Robert, 1915-20102
- Panitz, Murray1
- Parker, Charlie, 1920-19551
- Parks Council (New York, N.Y.)2
- Parrott, Lalan2
- Paz Organization13
- Peck, Russell, 1945-20091
- PepsiCo, Inc.16
- Perlis, Vivian1
- Perpetual Savings and Loan Association Bank10
- Perras, John1
- Perry, Julia, 1924-19791
- Persichetti, Vincent, 1915-19871
- Pettis, Ashley, 1892-1
- Philips' Gloeilampenfabrieken. Natuurkundig Laboratorium2
- Phillips, Barre2
- Phillips, Burrill2
- Phillips, Peter, 1930-1
- Piston, Walter, 1894-19762
- Pixley-Rothschild, Dorothy3
- Pollik1
- Pollikoff, Max5
- Ponce, Walter2
- Porter, Karl Hampton, 1939-1
- Porter, Quincy, 1897-19662
- Posin, Kathy1
- Pousseur, Henri2
- Powell, John, 1882-19631
- Price, Erwin L1
- Price, Irving1
- Price, Paul, 1921-19862
- Prokofiev, Sergey, 1891-19531
- Purcell, Henry, 1659-16951