Charles Obas | Ottmar Obermaier | Mariano Obiols Delgado | Adolf Obst | Eduard Ockel | J. Ockel | Robert Ockelmann | Ernst Odefey | Karl Oderich | Antonio Odierna | Georg Oeder | Emmerich Oehler | Max Oehler | Berthold Oehlwein | Erich Oehme | Hugo Oehmichen | Rolf Oehrlein | Heinrich Oeltjen-Rüstringen | Karl Oertel | Carl Oesterley d.J. | Carl Oesterley jr. | Georg Oetken | Dagmar Off-Klatten | Theodor Ohlsen | August Ohm | Wilhelm Ohm | Jakob Johann Öhrmann I | Lech Okolow | Frieder Heinze und Olaf Wegewitz | Joseph Maria Olbrich | Hans Olde | Hans Olde Jr. | Max Olderock | Eyvind Olesen | Ivan Gregorevitch Olinsky | Hertha Marie Olivet | Carl Olsen | Alfred Olsen | Christian Benjamin Olsen | Hans Olsen | Käthe Olshausen-Schönberger | Peter Iver Olsted | Willi Oltmanns | Balthasar Paul Ommeganck | Balthasar Paul Ommeganck | Luigi Onesto | Fabio Onesto | Umberto Ongania | Yoko Ono | Bruce Onobrakpeya | Karel Ooms | Georg Wilhelm Opdenhoff | Adolf Opel | Karl Opfermann | Ivan Opffer | Hans Ophagen | Walter Ophey | Kurt Opitz | Gustav Oppel | Lisel Oppel | Meret Oppenheim | Joseph Oppenheimer | Wolfgang Oppermann | Isidore Opsomer | Emil Orlik | Vladimir Donatovich Orlovski | Siegfried Örnster | Johann Peter Orth | Joseph Ortloff | Mathias Ortmann | Georgius Jacobus Johannes van Os | Henri van Os-Delhez | Josefine Osnaghi | Eugen Osswald | Adriaen van Ostade | Adriaen van Ostade | Carl Ostersetzer | Georg Osterwald | Michael Osterweil | C. Otte | Rudolf Otto von Ottenfeld | Otto Didrik Ottesen | Otto Didrik Ottesen | Otto Didrik Ottesen | Rudolf Otto | Heinrich Otto | Gerd Otto | Justin Pierre Ouvrié | Pavel Akimowitsch Ovchinnikov | Fritz Overbeck | Pawel Akimow Owtschinnikow |