Fatal Attraction is a 1987 American psychological thriller film directed by Adrian Lyne and written by James Dearden, based on his 1980 short film Diversion. Starring Michael Douglas, Glenn Close, and Anne Archer, the film follows Dan Gallagher (Douglas), an attorney who cheats on his wife Beth (Archer) with editor Alex Forrest (Close) following a chance encounter at a work function. When Dan decides to end the affair, Alex grows increasingly unstable and begins stalking him and his family.

Fatal Attraction was theatrically released in the United States on September 18, 1987, and emerged as a major commercial success at the box office, grossing $320 million against its $14 million production budget, becoming the second highest-grossing film of the year in the United States. The film received widespread acclaim, with particular praise for Lyne's direction, Dearden's screenplay, the editing, and the performances of the cast.

It received six nominations at the 60th Academy Awards, including Best Picture, Best Director for Lyne, Best Actress for Close, and Best Supporting Actress for Archer. Considered a pop culture phenomenon in the years since its release, the film is also credited for setting off the erotic thriller boom of the late 1980s to the mid 1990s.