Der Rosenkavalier or The Knight of the Rose is a comic opera by Richard Strauss. The words were especially written for the opera by the German poet Hugo von Hofmannsthal.

It was first performed in Dresden on January 26, 1911 and was an immediate success. It continues to be a very popular opera in opera houses all over the world and has been performed more often than any other German language 20th century opera.

The story is supposed to be happening in Vienna in the time of the Empress Maria Theresa (mid to late 18th century). The music and the words deliberately show the elegant life of aristocratic society of that time. For example: the title of the opera is about the silver rose which traditionally was sent by a bridegroom to his bride and was brought by a knight thus The Knight of the Rose.

This 1956 recording stars Elizabeth Schwarzkopf. Herbert von Karajan conducts.