- Odom, Stonewall, II1
- Omar Khayyam1
- Omori, Emiko1
- Orff, Carl, 1895-19821
- Ortega y Gasset, José, 1883-19552
- Orto, Marbriano de, -15292
- Osgood, Charles2
- Oster, Harry1
- Owen, David Dale, 1807-18601
- Owen, Robert Dale, 1801-18771
- Oyakawa, Stephen Noboru, 1921-19801
- Pachelbel, Johann, 1653-17062
- Pacific Arts Association (1924-1964)2
- Palestrina, Giovanni Pierluigi da, 1525?-15947
- Papademetriou, Peter C.2
- Papson, Stephen1
- Parks Council (New York, N.Y.)4
- Pasanella, Giovanni, 1931-1
- Pascucci, Ernest, 1968-19971
- Patterson, Alicia, 1906-19631
- Patton, Phil1
- Paul, Les2
- Pauley, Jane, 1950-2
- Pearce, Ken1
- Peat, David, 1947-20121
- Peck, Jim, 1943-1
- Pei, I. M., 1917-1
- Peisch, Mark L.6
- Pelli, Cesar2
- Pergolesi, Giovanni Battista, 1710-17361
- Perkins, Jack1
- Peters, William Wesley8
- Pettena, Gianni1
- Pfeiffer, Bruce Brooks1
- Philips, Peter, 1561-16281
- Phipps, Linda Sue1
- Phipps, William, 1922-20181
- Phoenix College1
- Phoenix Junior League1
- Phoenix Museum of Art1
- Phoenix Symphony46
- Phoenix Union High School (Phoenix, Ariz.)1
- Piano, Renzo1
- Picon, Antoine1
- Piven, Frances Fox1
- Plater-Zyberk, Elizabeth1
- Plattus, Alan J.1
- Plunz, Richard2
- Pokorny, Jan Hird, 1914-20081
- Polshek, James Stewart3
- Ponte, Alessandra1
- Pope, Albert, 1954-1
- Pope, Loren1
- Porter, John, 1931-20061
- Portoghesi, Paolo2
- Posener, Julius1
- Powell, Jackson O.1
- Powers, Alan, 1955-1
- Praetorius, Michael, 1571-16213
- Pragnell, Peter1