Der Templer und die Jüdin (English: The Templar and the Jewess) is an opera (designated as a Große romantische Oper) in three acts by Heinrich Marschner.

A revised version with recitatives rather than spoken dialogue was performed in Berlin on 3 August 1831 with Eduard Devrient as Bois-Guilbert.

Many critics regarded the opera as unnecessarily complicated (and expensive to produce) and simplified versions were prepared by Felix Mottl, Richard Kleinmichel and finally Hans Pfitzner (1912).

The opera was revived at the Wexford Festival in 1989, conducted by Albert Rosen and directed by Francesca Zambello, with William Stone as Bois-Guilbert and Greer Grimsley as the Black Knight.

The opera is set in England at the end of the 12th century and the main characters include The Black Knight, King Richard 'the Lionheart', Saxons, Normans, Templars and Robin Hood (here called Lokslei, i.e., Locksley) and his band of outlaws.