- Country: Philippines
- Genres: Comedy, Horror, Mystery
- Release: 1989-09-06
- Director: Lupita Aquino-Kashiwahara , Leroy Salvador
- Writers: Tina Loy , Jose Javier Reyes , Armando Lao
- Language: Filipino | Tagalog
- Stars: Herbert Bautista , Gelli de Belen , Jigo Garcia , Gloria Sevilla
- Runtime: 103 min
- Awards: N/A
- AKA: Dear Diary , Dear Diary (Philippines) , A Two-in-One Movie (Philippines)
- Plot: Two teen stories in one film starring the talented Herbert Bautista. In one story (Dear Party Line), he is a houseboy who strikes up a friendship with a girl over the phone. In another story (Dear Killer), he and his friends play detective.
- IMDB:tt0335036
Dear Diary Cast · · · ALL
Lupita Aquino-Kashiwahara
Director
Leroy Salvador
Director
Herbert Bautista
Badong (Dear Partyline) / Matthew Quiroy (Dear Killer)
Gelli de Belen
Grace (segment "Dear Partyline")
Jigo Garcia
Wally (segment "Dear Partyline")
Gloria Sevilla
Manang (segment "Dear Partyline")
Suzanne Gonzales
Grace's Sister (segment "Dear Partyline")
Toby Alejar
Felix (segment "Dear Partyline")
Joy Ortega
Sion (segment "Dear Partyline")
Noel Colet
Telephone Lineman (segment "Dear Partyline")
Carme Sanchez
Etang (segment "Dear Partyline")
Lea Salonga
Lenny Tacorda (segment "Dear Killer")
Michael De Mesa
Mr. Simon Macalintal (segment "Dear Killer")
Rosemarie Gil
Macalintal's Mother (segment "Dear Killer")
Leroy Salvador
Dr. Policarpio, M.D. (segment "Dear Killer")
Marita Zobel
Helen Tacorda (segment "Dear Killer")
Juan Rodrigo
Mr. Modesto Delgado (segment "Dear Killer")
Joko Diaz
Bogs Quiroy (segment "Dear Killer")
Shirley Fuentes
Niña Tacorda (segment "Dear Killer") (as Shirley Magnayo)
Naty Santiago
Mrs. Carpo (segment "Dear Killer")
Lou Veloso
Principal (segment "Dear Killer")
Fredmoore de los Santos
Freddie Carpo (segment "Dear Killer")