About Last Night (styled as About Last Night...) is a 1986 American  romantic comedy-drama film directed by Edward Zwick, and starring Rob Lowe and Demi Moore as Chicago yuppies who enter a committed relationship for the first time. The screenplay by Tim Kazurinsky and Denise DeClue is based on the 1974 David Mamet play Sexual Perversity in Chicago. The film was remade as the 2014 About Last Night (without the ellipsis).

About Last Night may refer to:

• About Last Night (1986 film), a comedy-drama film
• About Last Night (2014 film), an American romantic comedy film
• About Last Night (EP), by New Buffalo
• About Last Night (podcast)
• "About Last Night..." (South Park), a South Park episode
• "About Last Night", an episode from the third season of Dexter