- Country: Philippines
- Genres: Comedy, Horror
- Release: 1988-01-21
- Director: Carlo J. Caparas
- Writers: Carlo J. Caparas , Joey de Leon
- Language: Filipino | Tagalog
- Stars: Joey de Leon , Joey Marquez , Eddie Gutierrez , Lyka Ugarte , Janice Jurado , Cheenee de Leon , Richard Gutierrez , Raymond Gutierrez , Val Sotto , Jimmy Santos
- Runtime: min
- Awards: N/A
- AKA: Knock, Knock Who's There? (Philippines) , Knock, Knock Who's There? , Knock, Knock Who's There? (United Kingdom)
- Plot: WHOEVER STAYS LONGEST IN A DESIGNATED SPOOKY MANSION SHALL RECEIVE A WINDFALL. ONE BY ONE, THOSE WHO TAKE THE CHALLENGE DIE.
- IMDB:tt2618544
Knock, Knock Who’s There? Cast · · · ALL
Carlo J. Caparas
Director
Joey de Leon
Janice Jurado
Richard Gutierrez
Raymond Gutierrez
Val Sotto
Jimmy Santos
Ricky Del Rosario
Fred Moro
Minnie Aguilar
Elsie Oliva
Pilita Corrales
Cristina Gonzales
Isabel Granada
Eddie Gutierrez
Tonton Gutierrez
Joey Marquez
Chuck Perez
Miguel Rodriguez