Bertha Koster-thoe Schwartzenberg en Hohenlansberg (1891âÂÂ1993) was a Dutch sculptor.
Schwartzenberg was born on 8 January 1891 in Rothenburg. She studied with Joseph Mendes da Costa. She was married to fellow artist (1885âÂÂ1969). Her work was included in the 1939 exhibition and sale Onze Kunst van Heden (Our Art of Today) at the Rijksmuseum in Amsterdam. She was a member of the Arti et Amicitiae, the ' (Artists association Laren-Blaricum), the (Dutch Circle of Sculptors), and the Vereniging van Beeldende Kunstenaars Hilversum (Association of Visual Artists Hilversum).
Schwartzenberg died in 1993 at Hilversum at the age of 102.