August Enna (13 May 1859 – 3 August 1939) was a Danish composer, known mainly for his operas.
Enna was born in Nakskov, Lolland, Denmark, but his ethnic origins lay in the town of Enna in Sicily. His first major success as a composer was The Witch (1892), which was followed by several popular operas, songs, two symphonies (in D minor and E major), and a violin concerto. Strongly influenced by
Wagner's music, he was himself an influence on Danish composers, such as
Carl Nielsen.
August Enna also wrote piano music.