Rudolph Sophus Bergh (22 September 1859 – 7 December 1924) was a Danish composer and zoologist.
He later taught histology and embryology at the university and published two books in his field: Forelæsninger over den almindelige Udviklingshistorie (1887) and Forelæsninger over den dyriske Celle (1892).
In 1898 he was appointed a member of the Royal Danish Academy of Sciences and Letters.
In 1903 he abandoned his science career and moved to Germany to focus solely on his work as a composer.
After World War I he returned to his native country to teach at the Royal Danish Academy of Music.