Oh, What a Boy! (Swedish: Åh, en så'n grabb) is a 1939 Swedish musical comedy film directed by Ivar Johansson and starring Elof Ahrle, Sickan Carlsson and Gösta Cederlund. It was shot at the Råsunda Studios in Stockholm and on location in the city. The film's sets were designed by the art director Arne Åkermark.