- Paço-Rocchia, Sonia
- Pagh-Paan, Younghi
- Palacio-Quintin, Cléo
- Palestrina, Giovanni Pierluigi da
- Palmieri, Silvio
- Panisello, Fabián
- Panneton, Isabelle
- Papier, Ernest H
- Papineau-Couture, Jean
- Paris, Lucas
- Parkinson, Stephen
- Parmegiani, Bernard
- Parry, Hubert
- Parsons, Bill
- Pärt, Arvo
- Pascal, Robert
- Pasovsky, Yoav
- Pauk, Alex
- Payne, Anthony
- Pécou, Thierry
- Peeters, Flor
- Pelletier, Guy
- Pelletier, Marie
- Pelz, Ofer
- Penderecki, Krzysztof
- Penha, Rui
- Pennycook, Bruce
- Pentland, Barbara
- Pépin, Clermont
- Pepperall, Sean
- Peralta, Angela
- Perrin, Raymond
- Perrin, Ross
- Perron, Guy
- Pesson, Gérard
- Petchiersky, Boris
- Petersson, Mattias
- Pichardo, Jean Angelus
- Piché, Jean
- Pierné, Gabriel
- Pinto Fonseca, Carlos Alberto
- Plamondon, Yannick
- Poetzsch, Stefan
- Pohu, Sylvain
- Ponce, Manuel M
- Porat, Matan
- Porter, Pat
- Porter, Phil
- Poulenc, Francis
- Pousseur, Henri
- Prévost, André
- Prévost, Hélène
- Primard, Guillaume
- Pritchard, Alwynne
- Pritchard, Bob
- Prokofiev, Sergueï Sergueïevitch
- Provost, Serge
- Puccini, Giacomo
- Purcell, Henry
- PurForm
