Papin,
Denis Pascal,
Blaise Pauli,
Wolfgang Peierls,
Rudolf Ernst Penney,
William (George) Peregrinus,
Petrus Perl,
Martin L. Perrin,
Jean Baptiste Petit,
Alexis Phillips,
William D. Pippard,
Alfred Brian Plank,
Max Karl Ernst Ludwig Poisson,
Siméon Denis Popov,
Alexander Powell,
Cecil Frank Poynting,
John Henry Prandtl,
Ludwig Pringsheim,
Ernst Prokhorov,
Aleksandr Mikhailovich Prout,
William Purcell,
Edward Mills