Salomon Oppenheim Jr. (19 June 1772 – 8 November 1828) was a German Jewish banker, and the founder of the Sal.

[1] He was born in Bonn, the scion of an illustrious family of "Court Jews" (German: Hofjuden) who had served as advisers and moneylenders to the Prince-Archbishops of Cologne in the Rhineland area for several generations.

In 1789, at the age of 17, he set up a small commissions and exchange house in Bonn, then the residence of Prince-Archbishop Maximilian Francis of Austria.

Nine years later, after French troops had occupied the left banks of the Rhine, Oppenheim moved to the city of Cologne.

The main branches of the family converted to Protestantism (Betty Oppenheim and Heinrich David Hertz, and Simon Oppenheim's son Eduard) and Catholicism (Abraham's son Albert [de]) in the late 19th century.