Gunnar Lauring as Professor Edward Jacobsen

Vera Gebuhr as Fru Wilhelmine Jacobsen

Elga Olga Svendsen as Kokkepigen Kathrine

Johannes Meyer as Professor Ferdinand Schrøder

Vivi Bach as Therese Schrøder (as Vivi Bak)

Kjeld Petersen as Slangetæmmer Hermansen

Dirch Passer as Fotograf

Sigrid Horne-Rasmussen as Faster Ragnhild Jacobsen

Ellen Nielsen as

Kai Selliken as

Eva Cohn as

Anders Cohn as

Poul Finn Poulsen as

Susanne Randrup as

Charlotte Stig-Poulsen as

Alfred Wilken as

Ingeborg Skov as

Ole Monty as

Johannes Marott as

Povl Wøldike as

Christian Jørgen Nielsen as

Tao Michaëlis as

Lise Thomsen as

Karen Rud as

Svend Bille as

Mogens Brandt as

Jørgen Ryg as

Nick Miehe as

Klaus Scharling Nielsen as

Lili Heglund as

Miskow Makwarth as

Peter Kitter as

Minna Jørgensen as

Bernard Brasso as

Charles Rhodes as

Vera Stricker as

Victor Montell as

Jørgen Reenberg as