The Passion of Anna (Swedish: En passion – "A passion") is a 1969 Swedish drama film written and directed by Ingmar Bergman, who was awarded Best Director at the 1970 National Society of Film Critics Awards for the film.

The audience is introduced to Andreas Winkelman, a man living alone and emotionally desolate after the recent breakdown of his marriage. A neighbour, Anna, arrives and asks permission to use his phone. She walks with the aid of a cane. (It is later revealed that her husband and son died as a result of her driving off the road.) While Anna uses Andreas' phone, he eaves-drops on her conversation, after which she departs in tears. Anna has left her handbag behind and Andreas looks through it, finding and reading a letter from her husband that reveals that he is unhappy in their marriage and fearful for possible "psychological and physical violence".

The narrative of the film is periodically interrupted by brief footage of each of the four main actors being interviewed (by an unseen Bergman) about their role-characters.

Andreas takes the handbag to where Anna is living and is greeted at the door by the married couple, Eva and Elis, who are also in the midst of psychological turmoil. Elis is an internationally successful architect and amateur photographer who has an extensive archive of portraits categorised according to emotional states. Elis offers to take pictures of Andreas, to which he agrees.

One night while Elis is away, Eva visits Andreas, as she is bored and lonely and finds it hard to sleep. They listen to music and drink wine, which makes her drowsy. Andreas tucks her up on the sofa and she sleeps for some hours. After she awakes they become intimate and go to bed, although this is hardly shown. Afterwards she explains that during her only pregnancy years ago, she went to the hospital to seek treatment for insomnia. There she was mistakenly injected with an excessive dose, which resulted in the death of the child in her womb. She mentions that she and Elis both wept after this, and it is the only time she has seen him weep.

Elis photos Andreas. Elis agrees to organise the validation of a bank-loan sought by Andreas and gives him a typing task in order to help Andreas have the funds to pay back the loan. Eva arrives and when left alone with Andreas for a moment, warns him to be "careful" as regards Anna. Elis comes back and Eva asks him why he has a nasty look. He says that he only gets upset by trivialities.

Andreas and Anna are now living together at his house. Anna appears zealous in her faith and steadfast in her search for truth but gradually her delusions come to the surface. She describes a dream of hers, which seems to follow the events of Shame, where she emerges on an island helpless, witness to the horrors of war. For his part Andreas is unable to overcome his feelings of anxiety and disconnection, further dooming his relationship with Anna.

Throughout the film, an unknown person on the island is committing acts of animal cruelty, hanging a dog in a tree and violently killing sheep. A neighbour of Andreas (a loner who some regard as mentally disturbed) is suspected of these crimes. He commits suicide and the police bring a letter to Andreas where the poor man describes how he was beaten and humiliated by a group of men, after which he did not wish to continue living.