Diamonds Are Forever is the fourth novel by the English author Ian Fleming to feature his fictional British Secret Service agent James Bond. Fleming wrote the story at his Goldeneye estate in Jamaica, inspired by a Sunday Times article on diamond smuggling. The book was first published in 1956.

The story centres on Bond's investigation of a diamond-smuggling operation that originates in the mines of Sierra Leone and runs to Las Vegas. Along the way Bond meets and falls in love with one of the members of the smuggling gang, Tiffany Case. Diamonds Are Forever deals with international travel, marriage, and the transitory nature of life.