Page,
Frederick Handley Parsons,
Charles Algernon Pelton,
Lester Allen Penney,
William (George) Philips,
Anton Piccard,
Auguste Pilcher,
Percy Pixii,
Hippolyte Poncelet,
Jean-Victor Porsche,
Ferdinand Poulsen,
Valdemar Poynting,
John Henry Pullman,
George