Elena is a dramma per musica in a prologue and three acts by Francesco Cavalli, set to a libretto originally by Giovanni Faustini that was completed by Nicolò Minato. The opera was first performed in Venice at the Teatro San Cassiano; the dedication is dated to 26 December 1659.
- Walker, Thomas & Alm, Irene (2001). "Francesco Cavalli: Works". In Root, Deane L. (ed.). The New Grove Dictionary of Music and Musicians. Oxford University Press.