The Black Dahlia is a nickname given to 1940s murder victim Elizabeth Short.

Black Dahlia or The Black Dahlia may also refer to:

• Who Is the Black Dahlia? (1975 TV movie)
• The Black Dahlia (novel), by James Ellroy
• The Black Dahlia (film), a 2006 film by Brian De Palma
• The Black Dahlia (graphic novel), by Alexis Nolent and David Fincher, also based on Ellroy's novel
• Black Dahlia (film), a 2006 film by Ulli Lommel
• Black Dahlia (video game), a 1998 computer adventure game

• The Black Dahlia Murder (band), a melodic death metal band
• "Black Dahlia" (song), a 2008 song by Hollywood Undead
• "Black Dahlia", a song by Anthrax from We've Come for You All
• The Black Dahlia, a 2001 jazz orchestral composition by Bob Belden
• "Black Dahlia", a song by Porcupine Tree from The Incident
• "Black Dahlia", a song by Angel Haze from Dirty Gold

• Black Dalia, a 2009 Indian film
• Blag Dahlia (born 1966), punk rock musician and lead singer of The Dwarves
• Dahlia (disambiguation)
• Black Dahlia, a character from fighting game, Skullgirls
• Sofia Black-D'Elia (born 1991), American actress