Luise Reuss-Belce (24 October 1862 – 5 March 1945) was an Austrian - German operatic dramatic soprano.
In 1885 she married the composer and musicologist Eduard Reuss (1851-1911) and from then bore the double name by which she became known.
She studied in Vienna with Josef Gänsbacher and in Karlsruhe with Fritz Plank (1848-1900).
In 1884 she made a guest appearance in Munich; 1899 in Amsterdam; 1893 and 1900 at the Covent Garden Opera in London.
She began working as a voice teacher and opera director, in the latter function from 1916 at the Deutsche Oper Berlin.