The Marriage Circle is a 1924 American silent comedy film produced and directed by Ernst Lubitsch and distributed by Warner Bros. Based on the play Only a Dream by Lothar Schmidt, the screenplay was written by Paul Bern. The "circle" of the title refers to the ring of infidelities (suspected and otherwise) central to the plot.

Plot

In 1923 Vienna, when Mizzi threatens to leave her husband, Prof. Josef Stock, for "cruelty" for being indifferent to an invitation from her friend Charlotte to introduce them to her husband, he smiles at the suggestion, which infuriates her; she changes her mind and refuses to accommodate him. She goes alone. When Prof. Stock sees his wife get into a taxi with a man, he cheers up. (He later hires a private detective to obtain proof of her misconduct for a divorce.) As it turns out, they are strangers, merely sharing the taxi.