Zar und Zimmermann (Tsar and Carpenter) is a comic opera in three acts, music by Albert Lortzing, libretto by the composer after Georg Christian Römer's Der Bürgermeister von Saardam, oder Die zwei Peter, itself based on the French play Le Bourgmestre de Saardam, ou Les deux Pierre by Mélésville, Jean-Toussaint Merle, and Eugène Centiran de Boirie.

Gaetano Donizetti had set the same story in his 1827 opera Il borgomastro di Saardam.

Lortzing's most successful and enduring work, it is still regularly performed in German-speaking countries.

Peter Ivanov is in love with Marie, the niece of Van Bett, the Burgomaster of Saardam.

Tsar Peter is told of trouble in Russia, and decides to return home.