- Country: USA
- Genres: Horror, Sci-Fi, Thriller
- Release: 1980-11-26
- Director: Greydon Clark
- Writers: Lyn Freeman , Daniel Grodnik , Bennett Tramer , Steve Mathis
- Language: English
- Stars: Jack Palance , Martin Landau , Tarah Nutter , Christopher S. Nelson , Cameron Mitchell , Neville Brand , Sue Ane Langdon , Ralph Meeker , Larry Storch , Lynn Theel
- Runtime: 89 min
- Awards: N/A
- AKA: Ostrzezenie (Poland) , Atacan sin avisar (Mexico) , Без предупреждение (Bulgaria) , Das Geheimnis der fliegenden Teufel , Ilman varoitusta (Finland) , Fenyegetés (Hungary) , Without Warning (Canada) , Πλανήτης Γη: Παιχνίδι για εξωγήινους (Greece) , Llegan sin avisar (Spain) , Planitis Gi: Paignidi gia exogiinous (Greece) , Utan varning (Sweden) , Alien Warning (United States of America) , Without Warning (United Kingdom) , Bez upozorenja (Serbia) , Terreur extraterrestre (Canada) , Fruktans dal (Sweden) , Предостережение , Without Warning (Australia) , O Aviso (Portugal, Portuguese Republic) , Alien Encounters (United States of America) , Without Warning (India) , Varoitus (Finland) , Horror - Caccia ai terrestri (Italy) , Без предупреждения , The Warning (United Kingdom) , Jagtområde Jorden (Denmark) , Das Geheimnis der fliegenden Teufel (Germany) , Alien Shock , It Came Without Warning (United States of America) , Utan varning (Finland) , Without Warning (United States of America) , Terreur extraterrestre (France, French Republic) , Without Warning , Sem Aviso (Brazil)
- Plot:
An alien creature stalks human prey.
- IMDB:tt0081764
Without Warning Cast · · · ALL
Greydon Clark
Director
Tarah Nutter
Sandy
Christopher S. Nelson
Greg
Jack Palance
Joe Taylor
Martin Landau
Fred 'Sarge' Dobbs
Sue Ane Langdon
Aggie
Neville Brand
Leo
Cameron Mitchell
Hunter
Darby Hinton
Randy
David Caruso
Tom
Kevin Peter Hall
The Alien
Lynn Theel
Beth
Larry Storch
Scoutmaster
Ralph Meeker
Dave
Mark Ness
Bill, pool shooter
Jeffrey Sudzin
Ambulance Driver