A Knight in London (German: Eine Nacht in London) is a 1928 British-German silent drama film directed by Lupu Pick and starring Lilian Harvey, Ivy Duke and Robin Irvine. A sound version was released in 1930. While the sound version has no audible dialog, it features a synchronized musical score with sound effects. The film was one of a significant number of co-productions between the two countries in the late 1920s. The film's direction and the cinematography by Karl Freund were widely praised.