Cornelis Bronsgeest (24 July 1878 in Leiden - 22 September 1957 in Berlin) was a Dutch bass-baritone who made his career in Germany.
Born to a bourgeoisie catholic family from Leiden cultivating arts and after discovering his musical talent, Bronsgeest decided to give up career as an architect and became an opera singer, touring internationally.
Bronsgeest is linked to the beginnings of radio at the beginning of the 20th century.
He founded two major institutions, the Berliner Rundfunk Orchester (now the Rundfunk-SinfonieOrchester Berlin) and the Berliner Rundfunck Chor (now the Rundfunkchor Berlin).He directed the opera department at Berlin radio and was a stage manager with Berliner Theater der Jugend.