Henriette Wegner, née Henriette Seyler, was a Norwegian businesswoman and philanthropist, a member of the Hanseatic Berenberg banking dynasty of Hamburg and the wife of the Norwegian industrialist Benjamin Wegner. She was briefly a co-owner of Berenberg Bank, and was also noted for her work for the homeless in Norway. During her life she was a citizen of the city-republic of Hamburg, of France during the Napoleonic Wars, and finally of Norway from 1824.

The Berenberg family was a Flemish-origined Hanseatic family of merchants, bankers and senators in Hamburg, with branches in London, Livorno and other European cities. The family was descended from the brothers Hans and Paul Berenberg from Antwerp, who came as Protestant refugees to the city-republic of Hamburg following the Fall of Antwerp in 1585 and who established what is now Berenberg Bank in Hamburg in 1590. The Berenbergs were originally cloth merchants and became involved in merchant banking in the 17th century. Having existed continuously since 1590, Berenberg Bank is the world's oldest surviving merchant bank.