Trivia

Steve Martin and Victoria Tennant were married at the time.

The freeway sign was programmed to deliver its messages in multiple languages so it wouldn't have to be subtitled in foreign-language releases.

Sarah Jessica Parker has stated that this movie changed her career. Up until this point, she had always played mousy girls or the best friend. She said that no one in Hollywood had thought of her as "sexy". Once she was cast in this role, several new doors opened for her.

Steve Martin once said of this movie in Morris Wayne Walker's book "Steve Martin: The Magic Years" (1999): "My mature film career started with All of Me (1984) and ends with L.A. Story."

There are numerous references to William Shakespeare: the gravedigger scene is from "Hamlet", Harris K. Telemacher (Steve Martin) quotes Shakespeare twice, and the storyline contains elements from "A Midsummer Night's Dream" (with the two confused couples exchanging lovers) and "The Tempest" (with a magic storm stranding the lovers, the gods (in the form of stone lions) blessing the couple, and a character named Ariel). The electronic sign also quotes Shakespeare with "There are more things n Heaven and Earth..."

Terry Jones: The Monty Python star is heard as the voice of Sara's mother.

Paula Abdul: as a roller skater in front of Tail O' the Pup.

Chevy Chase: as Carlo Christopher at L'Idiot.

Rick Moranis: as the gravedigger.

Woody Harrelson: as Harris' Boss at the television station.