Poul Reichhardt as Kurt / Martin Vest

Helga Frier as Cirkusdirektør Karla

Peter Malberg as Laurits 'Laust' Jeppesen

Grethe Holmer as Bodil Nielsen

Ib Schønberg as Onkel Hans

Ove Rud as Frank Otto Munk - ingeniør

Ib Mossin as René

Irene Hansen as Marianne - artist

Louis Miehe-Renard as Jack Hviid

Jeanne Darville as Rosa 'Anita' Mogensen

Beatrice Palner as Kvinde i merkanteri

Alma Olander Dam Willumsen as Kurts mor (as Alma Olander Dam)

Jakob Nielsen as Sorte Henrik

Povl Wøldike as Læge

Margrethe Nielsen as Fru Hviid

Hans Egede Budtz as Kommandør

Torkil Lauritzen as

Otto Møller Jensen as Cirkusdreng

Rudi Hansen as Cirkuspige

Ole Neumann as Dreng

Axel Strøbye as Klarinetspiller

Knud Hallest as Toldbetjent

Jens Kjeldby as Toldbetjent

Erling Dalsborg as

Hugo Herrestrup as

Ole Tage Hartmann as

Eva Melchiorsen as

Ole Olesen as

Mantza Rasmussen as

Annizette Hansen as

Lene Ingemann Jørgensen as

Biff as Martins Hund