- Pontevedra-Pombal, Xabier
- Pontey, William.
- Ponti, Massimo
- Pontiac Nurseries,
- Pontiac Nursery Co.
- Pontiac Nursery Company.
- Pontier, Jean-Pierre
- Pontificia Universidad Católica del Ecuador.
- Pontin, Magnus Martin af 1781-1858
- Ponting, Herbert George, 1870-1935
- Ponting, John
- Pontius, A. R.
- Pontius, F Dale
- Ponton, D A
- Ponton, T Graham
- Ponton-Cevallos, José
- Pontoppidan, Erich, 1698-1764
- Pontoppidan, Maj-Britt
- Pontual, F B
- Pontynen, Arthur
- Ponz Sejas, Elizabeth.
- Ponz, Antonio
- Ponzer Nursery.
- Ponzetti, Angelo, engineer
- Ponzetti, Jeanne
- Ponzetto, Josi Margarete
- Ponzi, Giuseppe, 1805-1885
- Ponzo, Alessandro
- Ponzo, Antonino
- Poo, Sinlan
- Pook, Victoria
- Pool, Amy.
- Pool, C J C
- Pool, Frank J.
- Pool, J.
- Pool, Monique
- Pool, Raymond J. (Raymond John), 1882-1967
- Pool, Venus Worrell, 1882-1967
- Poole Brothers' Nursery,
- Poole, A
- Poole, Alexandria
- Poole, Alexandria K
- Poole, Arthur J
- Poole, Colin M.
- Poole, D. M.
- Poole, Daniel A
- Poole, Henry S. 1844-1917
- Poole, Herman, 1849-1906
- Poole, Hester Martha Mrs., (Hunt), 1833-1932
- Poole, J P
- Poole, Jackie M.
- Poole, James P.
- Poole, Jennifer Rose
- Poole, K. G.
- Poole, Kim G.
- Poole, Linda.
- Poole, M A
- Poole, M D
- Poole, Margaret
- Poole, P.
- Poole, R Frank
- Poole, Robert Ransom, 1853-
- Poole, Robert W.
- Poole, Silas Frank,
- Poole, Stephen
- Poole, W
- Poole, W. M.
- Poole, Walter G.
- Poole's Seed & Implement Co.
- Pooley, A C
- Pooley, E S
- Pooley, Elsa
- Pooley, P.
- Pooley, T A
- Poolice, Jane
- Poolman, F
- Poolsum, Willem van (Utrecht)
- Pooma, Rachun
- Poo-Muñoz, Daniela A.
- Poon, Calvin Po Chuen, 1935-
- Poon, Liz
- Poon, Man-Chiu
- Poon, Sanson
- Poona
- Poong, Sze-Wan
- Pooni, Harjit Singh
- Poonlaphdecha, Srisupaph
- Poonswad, Pilai
- Poopath, Manop
- Pooprang, T
- Poor, F. J.
- Poor, Hustace H
- Poór, Judit
- Poor, Margaret Eva
- Poorani, J.
- Poorani, Janakiraman
- Poore, Alistair G B
- Poore, Benjamin Perley, 1820-1887
- Poore, D M
- Poore, Gary C. B.
- Poore, Gary C. B.
- Poore, Gary C. B.
- Poore, Homer D. (Homer Durant), 1888-
- Poore, Jennifer
- Poore, M E D
- Poorman, Fl
- Poorman, L H
- Poorman, Leroy H
- Poorman, Lh
- Poorman, Roy
- Poorten, Jan Johan ter
- Poorter, E P R
- Poorter, Jennifer K.Sofoulis, Sandra
- Poos, F W
- Poot, Abraham van, approximately 1617-1687
- Poot, Martin
- Poot-Delgado, Carlos A
- Poot-Delgado, Carlos Antonio
- Poot-López, Gaspar R
- Poot-Pech, Mario A.
- Poovachiranon, S
- Pop, Daniela Nicoleta
- Pop, Daniel-R
- Pop, Daniel-Răzvan
- Pop, Florin-Mihai
- Pop, Ioan Mihai
- Pop, V
- Popa, Alexandra
- Popa, Alexandra Florina
- Popa, Luis
- Popa, Luis Ovidiu
- Popa, Oana Paula
- Popa, Răzvan
- Popa, Valentin
- Popadyuk, I V
- Pope, A S
- Pope, A. Winthrop
- Pope, Alan Melvill, 1879-
- Pope, Alexander, 1849-1924
- Pope, Allan Melvill, 1879-
- Pope, C Lorenzo
- Pope, Clifford H. (Clifford Hillhouse), 1899-1974
- Pope, David
- Pope, Elizabeth
- Pope, Elizabeth C
- Pope, Frank
- Pope, George W. (George Whitfield), 1867-
- Pope, Joan.
- Pope, John, 1822-1892
- Pope, John.
- Pope, Merritt N. (Merritt Nichol), 1883-
- Pope, Pauline
- Pope, Philip H.
- Pope, R
- Pope, R. J.
- Pope, Robert B.
- Pope, Robert D
- Pope, Rufus, 1857-1944
- Pope, Sarah H.
- Pope, T E B
- Pope, Thomas E. B.
- Pope, Thomas H.
- Pope, W. H.
- Pope, William, 1811-1902
- Pope, Willis T. (Willis Thomas), 1873-
- Popenoe, C. H. (Charles Holcomb), 1884-1933
- Popenoe, C. H.,
- Popenoe, Charles Holcomb, 1884-
- Popenoe, E P
- Popenoe, F. O.
- Popenoe, Judson.
- Popenoe, Paul, 1888-1979
- Popenoe, W. P.
- Popenoe, Wilson, 1892-1975
- Popescu, Irinel Eugen
- Popescu, P
- Popescu, Viorel Dan
- Popgeorgiev, Georgi
- Popham, Edward J.
- Popham, J D
- Popham, Mary Leydorne
- Popham, W. L.
- Popham, William Lee, 1901-
- Popham., H Leyborne
- Popia, C M L
- Popic, Tony J
- Popkin-Hall, Zachary
- Poplar Grove Nurseries.
- Poplar River Bilateral Monitoring Committee.
- Poplawski, M. L. S.
- Pople, A R
- Pople, R G
- Pople, Robert G
- Poplin, Cécile
- Popoff, M
- Popoff, N
- Popoff, O
- Popoff, O F
- Popoff, Orlando
- Popoff, Orlando F
- Popoff, Orlando F.
- Popoff, Orlando Fabián
- Popoli, John J
- Popolo, Raquel Silveira
- Poponessi, Silvia
- Poponnessi, Silvia
- Popov, Alexi, 1942-
- Popov, Anton
- Popov, Cyril
- Popov, Dimitar
- Popov, Eugeny
- Popov, George
- Popov, Grigory
- Popov, Grigory V
- Popov, Grud
- Popov, Ivan
- Popov, Konstantin P.
- Popov, L E
- Popov, Leonid
- Popov, Leonid E
- Popov, Nikolay
- Popov, Susan Rosenstiel.
- Popov, V. P.
- Popov, Vasil
- Popov, Vasily
- Popov, Yuri
- Popov, Yuri A.
- Popova, Anna
- Popova, Eugene S
- Popova, G. M.
- Popova, Irina M
- Popova, Vanya
- Popovic, Milos
- Popović, Miloš
- Popović, Nataša
- Popović, Slađana
- Popovich, Cecilia
- Popovich, Steve J.
- Popovici, George
- Popovici, Mariana
- Popovici, Ovidiu
- Popovici, Ovidiu Alin
- Popovici-Baznosanu, A
- Popovkin, Alex
- Popovski, Dean
- Popowitsch, Johann Siegmund Valentin, 1705-1774
- Popowski, Genoveva
- Popp and Lang Seed Co.
- Popp, Carl J.
- Popp, D