- Plass, Adrian
- Plath, Sylvia
- Plato
- Platt, Charles
- Platt, Marc
- Platt, Richard
- Plautus
- Plimpton, George
- Plotinus
- Plotnik, Arthur
- Plumb, J. H.
- Plum-Ucci, Carol
- Plutarch
- Pogue, David
- Pohl, Frederik
- Poitier, Sidney
- Pojman, Louis P.
- Polacco, Patricia
- Polanyi, Karl
- Polanyi, Michael
- Polkinghorne, John
- Pollack, Neal
- Pollack, Rachel
- Pollan, Michael
- Pollan, Stephen M.
- Pollock, John
- Pollotta, Nick
- Polo, Marco
- Pólya, G.
- Polybius
- Pomeroy, Sarah B.
- Pondsmith, Michael
- Pool, Daniel
- Poortvliet, Rien
- Pope, Alexander
- Pope, Dudley
- Pope, Elizabeth Marie
- Pope John Paul II
- Pope Osborne, Mary
- Popper, Karl Raimund
- Porter, Connie
- Porter, Darwin
- Porter, Eleanor H.
- Porter, Eliot
- Porter, Gene Stratton
- Porter, Jane
- Porter, Katherine Anne
- Porter, Michael E.
- Porter, Roy
- Portis, Charles
- Portman, Frank
- Posner, Gerald L.
- Posner, Richard A.
- Postman, Neil
- Post, Peggy
- Postrel, Virginia
- Potocki, Jan
- Potok, Chaim
- Potter, Alexandra
- Potter, Beatrix
- Potter, Patricia
- Potter, Stephen
- Pound, Ezra
- Poundstone, William
- Pournelle, Jerry
- Powell, Anthony
- Powell, Colin L.
- Powell, Dawn
- Powell, Eric
- Powell, John
- Powell, Julie
- Power, Eileen
- Powers, Alan
- Power, Samantha
- Powers, J. F.
- Powers, Richard
- Powers, Shelley
- Powers, Tim
- Powlison, David
- Powys, John Cowper
- Poyer, David
- Poythress, Vern S.
- Prabhupada, A.C. Bhaktivedanta Swami
- Prange, Gordon W.
- Pratchett, Terry
- Prather, Hugh
- Prather, Richard S.
- Pratico, Gary D.
- Pratt, Fletcher
- Pratt, Hugo
- Pratt, Richard L.
- Prebble , John
- Preiss, Byron
- Prejean, Helen
- Preller, James
- Prelutsky, Jack
- Prentiss, Elizabeth
- Prescott, William H.
- Press, Abingdon
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