Erik Balling	...	(Director)
Erik Balling, Henning Bahs	...	(Writer)
Ove Sprogøe	...	Egon Olsen
Morten Grunwald	...	Benny Frandsen
Poul Bundgaard	...	Kjeld Jensen
Peter Steen	...	Kriminalassistent Mortensen
Poul Reichhardt	...	Chefen
Kirsten Walther	...	Yvonne Jensen
Lotte Tarp	...	Ulla
Grethe Sønck	...	Connie
Hanne Løye	...	Prostitueret
Lise Henningsen	...	Prostitueret
Ole Monty	...	Sheriffen
Paul Hagen	...	Hansen
Arthur Jensen	...	Stationskarl
Ejner Federspiel	...	Konduktør
Poul Thomsen	...	Politichauffør

Summary: The first of 13 Olsenbanden films presents us with Egon Olsen, head of the gang, and his friends Benny and Kjeld, who want to become the best known gang in Denmark and eventually Europe by stealing a famous Bavarian work of art currently displayed in a Copenhagen museum. Although Egon's plan works out fine, there is only trouble ahead for the little gang.