The 27 Club, also occasionally known as the Forever 27 Club or Club 27, is a name for a group of influential rock and blues musicians who all died at the age of 27, sometimes under mysterious circumstances.

There is some debate as to the criterion used to include musicians who died at the age of 27 in the "27 Club". The impetus for the club's creation were the deaths of a seemingly unusual number of prominent 27-year-old musicians within a two-year period of time: Brian Jones, Jimi Hendrix, Janis Joplin and Jim Morrison – Morrison and Jones dying on the same date two years apart.

[artistKurt Cobain, who died in 1994, was later included by some, probably due to his popularity and his death occurring at the pinnacle of his career. According to the book Heavier Than Heaven, when Cobain died, his sister claimed that as a kid he would talk about how he wanted to join the 27 Club. On the fifteenth anniversary of Kurt Cobain's death, National Public Radio's Robert Smith said, "The deaths of these rock stars at the age of 27 really changed the way we look at rock music." The 27s: The Greatest Myth of Rock & Roll details the history of the phenomenon.

There is a common superstition among the stoner culture that the use of a white lighter is unlucky. The superstition originated from rumors that 4 of the 5 prominent members of the 27 Club (Hendrix, Joplin, Morrison, and Cobain) each had a white lighter in their possession at the time of their deaths.