Nocturnal is the third studio album by American melodic death metal band the Black Dahlia Murder.

It was released through Metal Blade Records on September 18, 2007, and is the band's first album to feature bassist Bart Williams, who replaced Dave Lock, and drummer Shannon Lucas.

The name of the second track "What a Horrible Night to Have a Curse", is taken from the name of the band's debut demo release of the same name, which in turn is a quote from the 1988 video game Castlevania II: Simon's Quest; the song is featured on the soundtrack for the video game Saints Row 2 and as downloadable content for Rock Band.

The song "Deathmask Divine" appears to be inspired by both the story of Carl von Cosel and the 1979 Italian horror film Beyond the Darkness.

All lyrics are written by Trevor Strnad; all music is composed by Brian Eschbach and the Black Dahlia Murder