- Country: Denmark
- Genres: Comedy, Crime, Family
- Release: 1978-10-06
- Director: Erik Balling
- Writers: Erik Balling , Henning Bahs
- Language: Danish | German
- Stars: Ove Sprogøe , Morten Grunwald , Poul Bundgaard , Kirsten Walther , Axel Strøbye , Ole Ernst , Bjørn Watt-Boolsen , Ove Verner Hansen , Edward Fleming , Ejner Federspiel
- Runtime: 107 min
- Awards: N/A
- AKA: Банда Ольсена вступает в войну , Olsen-banden går i krig , Olsen-banden går i krig (Denmark) , Az Olsen-banda hadba száll (Hungary) , The Olsen Gang Goes to War , Die Olsenbande steigt aufs Dach , Gang Olsena idzie na wojnę (Poland) , The Olsen Gang Goes to War (United Kingdom) , The Olsen Gang Goes to War (United States of America) , Az Olsen-banda harcba indul (Hungary)
- Plot: Some criminal EU ministers plan to turn Denmark into a gigantic fair ground and holiday paradise. Egon gets his hands on some important documents which could both make them rich and save Denmark's future.
- IMDB:tt0078026
The Olsen Gang Goes to War Cast · · · ALL
Erik Balling
Director
Ove Sprogøe
Egon Olsen
Morten Grunwald
Benny Frandsen
Poul Bundgaard
Kjeld Jensen
Kirsten Walther
Yvonne Jensen
Axel Strøbye
Detective Jensen
Ole Ernst
Detective Holm
Bjørn Watt-Boolsen
Bang-Johansen
Ove Verner Hansen
Bøffen
Edward Fleming
Black Baron
Karl Stegger
Chef at Archive
Emil Hass Christensen
Prison Warden
Bjørn Puggaard-Müller
State Secretary at Archive
Birger Jensen
Archive Employee
Holger Perfort
Archive Employee
Holger Vistisen
Archive Employee
John Martinus
Town Hall Employee
Jørgen Beck
Town Hall Employee
Tom McEwan
Porcelain Shop Owner
Ole Dupont
Policeman (uncredited)
Bjarne Adrian
Garbage Collector (uncredited)
Lisbeth Frandsen
Canteen Woman (uncredited)
Kirsten Hansen-Møller
Canteen Woman (uncredited)
Jan Jørgensen
Policeman (uncredited)
Perry Knudsen
Carlsberg Worker (uncredited)
Bertel Lauring
Cabdriver (uncredited)