Siegfried Kapper was the literary pseudonym of Isaac Salomon Kapper (21 March 1821, Smíchov – 7 June 1879, Prague), a Bohemian-born Austrian writer of Jewish origin. Born in Smichow, Kapper studied medicine at Prague University, later completing a Ph.D. at the University of Vienna. Kapper wrote excellent fairy tales and poems, and was one of the leading figures of Czech-Jewish assimilation. Kapper wrote in both German and Czech. He translated Mácha's Máj into German for the first time (1844).
After his death, the Kapper-Society was founded; its aim was Czech-Jewish assimilation and opposition to Zionism and German-Jewish assimilation.
- "Slavische Melodien," (1884)
- "Die Handschriften Altböhmischer Poesien" (1859)
- "Die Böhmischen Bäder" (1857)
- "Fürst Lazar" (1853)
- "Falk" (1853)
- "Südslavische Wanderungen" (1853)
- "Die Gesänge der Serben" (1852 – in two parts)
- "Lazar der Serbenzar," (1851). Kapper had a Serbian predecessor in the person of Joksim Nović-Otočanin who published his book on the same theme at Novi Sad (Neusatz) in 1847.
- "Befreite Lieder dem Jungen Oesterreich" (1848)
- "České Listy" (1846)
- ^ Miloslav Uličný: Vedlejší efekt: Mácha’s Mai, in: Plav magazine, 
- ^ M.Cornis-Pope and John Neubauer (eds), Comparative History of the Literarures in European Languages, Amsterdam/Philadelphia, Bejamins BV,2004, v.4, p.305