Opitz, Carolina Wilhelmina Henriette (birth 29 Jul 1826 Telgte (Dld.) - died 23 Jul 1877 Harderwijk)
Opitz, Johann Christian
Oppenheim, Abraham Eliazer
Oppenheim, Eduard (birth 19 Jan 1858 Rotterdam - died 29 Oct 1930 Rotterdam)
Oppenheimer, Leo (birth 28 Oct 1907 Oss - died 23 Jul 1943 Sobibor)
Oppenheimer, Louis