Oakley, Violet (1)
Oban, Koson Naga (13)
Obeda, Carlos Vasquez Y (1)
Oberhausen, Emmanuel (1)
Oberheide, Heidi (1)
Oberman, Anthony (1)
Obrien, Patrick (18)
Ochagavia, Carlos (8)
Ochtervelt, Jacob (1)
Oconner, William (9)
Odelmark, Frans Wilhelm (1)
Odom, Mell (46)
Odow, Rosa (1)
Odum, Fran (1)
Oehme, Ernst Ferdinand (2)
Oehmichen, Hugo (1)
Oer, Theobald Reinhold von (1)
Oever, Hendrick Ten (9)
Ofa (9)
Ogden, Henry Alexander (1)
Ogilby, John (1)
Ohagan, Desmond (1)
Ohara, Marie (1)
Ohno, Bakufu (20)
Ohrbach, Barbara Milo (14)
OKeeeffe, Georgia (179)
Okeefe, Mary (7)
Okya, M (1)
Olano, Ignacio Diaz (118)
Olbinski, Rafal (163)
Olis, Jan (1)
Olivares, Alfonso De (8)
Olivares, Fausto (15)
Oliver (1)
Oliver, Tony (224)
Oliver, William (2)
Olives, Cati (19)
Olivie, Bon Leon (1)
Olivier, Johann Ferdinand (1)
Oller, Erika (7)
Ollivier, Michel (1)
Olmstead, Mayo (4)
Olrik, Ole Henrik (1)
Olsen, Greg (4)
Olsen, Kristen (1)
Olsen, Mimi Vang (29)

Olsen, Penny (130)
Olson, Eric (11)
Omar, Rayyan (2)
Omolade, Kip (3)
Omyers, Duane (1)
Onat, Hikmet (1)
Onderdonk, Robert Julian (1)
Ong, Diana (5)
Onofri, Crescenzio (0)
Oost, Jacob Van The Elder (5)
Oostsanen, Jacob Cornelisz Van (6)
Opdenhoff, George Willem (1)
Opie, John (45)
Or, Aviv (1)
Orcagna, Andrea (1)
Orcajo, Angel (32)
Orchardson, Sir William Quiller (31)
Orde, G C (1)
Orenstein, Vik (1)
Orientalistas, Los (234)
Orlando, A B (1)
Orley, Bernaert Van (12)
Orlik, Emil (1)
Orlowska, Maria (63)
Orlowski, Aleksander (1)
Orozco, Jose Clemente (42)
Orpen, Sir William Newenham Montague (8)
Orsel, Andre Jacques (1)
Orsi, Lelio (1)
Ortaleza, Robert (1)
Ortega Munoz, Godofredo (64)
Ortega, Cris (2)
Ortega, Jose (23)
Ortega, Martin Rico Y (11)
Ortega, Rafael Alvarez (9)
Ortiz, Christopher (1)
Ortiz, Francisco Pradilla Y (1)
Ortiz, Jose Benlliure (2)
Ortiz, Manuel Angeles (14)
Ortolano (Giovanni Battista Benvenuti) (1)
Os, George Jacobus Johannes van (5)
Os-Delez, Van (1)
Osbeck, Osbeckia (1)
Osborn, Jacqueline (5)
Osborne, Walter Frederick (1)
Osburn, Judy (1)
Oslin, Linda L (1)

Osmerkin, Alexander (10)
Osmith (1)
Osolodkov (1)
Osslund, Helmer (0)
Ostade, Adriaen Van (30)
Ostade, Isack Van (9)
Osterlind, Allan (1)
Osterwalder, H (4)
Osterweil, Mike (1)
Osthaus, Edmund Henry (3)
Osullivan, Mary (1)
OToole Michael (1)
Ottesen, Otto Didrik (3)
Ottino, Pasquale (1)
Otto, Gabriele Dell (17)
Otto, Walt (19)
Ouderaa, Pierre Jan Van Der (1)
Oudry, Jean-Baptiste (6)
Ouellet, Joanne (2)
Ouellette, Francine (1)
Ouellette, Joan (1)
Ouimet, Serge (1)
Outin, Pierre (4)
Ouvrie, Pierre Justin (2)
Ouwater, Isaac (2)
Ovcacik, John (1)
Ovens, Jurriaen (Jürgen) (1)
Overacre, Gary (8)
Overbeck, Johann Friedrich (7)
Overend, William Heysham (1)
Oviedo, Ramon (1)
Ovissi, Nasser (3)
Owen, Alice (2)
Owen, Loading (1)
Owen, William (1)
Oxborough, Dorothy (1)
Oyens, David (3)
Oyens, Pieter (1)
O’Brian, Tim (4)
O’Brien, Kathy (2)
O’Brien, Tim (1)
O’Connell, Kathleen (1)
O’Connor, John (1)
O’Driscoll, Dan (1)
O’Keeffe, Georgia (3)
O’neil, Henry Nelson (23)
O’neill, George Bernard (20)