Ollefers, Esther
Ollefers, Rob
Ollifers, Mike
Ophof, Renate Maria
Oppenheim, NN
Oppenheimer, Isaac (birth 8 Mar 1788 Sickenhofen - Duitsland, died 25 Jul 1864 Arnhem)
Ortseifen, Adele Elfriede Elisabeth (birth 3 Jun 1898 Stolberg - Duitsland, died 8 Jul 1983 Amsterdam)
Ossendrijver, Aaltje (birth 23 Jul 1874 Amsterdam - died 5 Feb 1943 Auschwitz (concentratiekamp), Polen)