Mrs. Dalloway is a novel by Virginia Woolf, published on 14 May 1925, that details a day in the life of Clarissa Dalloway, a fictional upper-class woman in post-First World War England. It is one of Woolf's best-known novels.

The working title of Mrs. Dalloway was The Hours. The novel began as two short stories, "Mrs. Dalloway in Bond Street" and the unfinished "The Prime Minister". The book describes Clarissa's preparations for a party she will host in the evening, and the ensuing party. With an interior perspective, the story travels forwards and backwards in time, to construct an image of Clarissa's life and of the inter-war social structure. The novel addresses the nature of time in personal experience through multiple interwoven stories.

In October 2005, Mrs. Dalloway was included on TIME Magazine's list of the 100 best English-language novels written since its first issue in 1923.

Clarissa Dalloway goes around London in the morning, getting ready to host a party that evening. The nice day reminds her of her youth spent in the countryside in Bourton and makes her wonder about her choice of husband; she had married the reliable Richard Dalloway instead of the enigmatic and demanding Peter Walsh, and she "had not the option" to be with a female romantic interest, Sally Seton. Peter reintroduces these conflicts by paying a visit that morning.

Septimus Warren Smith, a First World War veteran suffering from deferred traumatic stress, spends his day in the park with his Italian-born wife Lucrezia, where Peter Walsh observes them. Septimus is visited by frequent and indecipherable hallucinations, mostly concerning his dear friend Evans who died in the war. Later that day, after he is prescribed involuntary commitment to a psychiatric hospital, he commits suicide by jumping out of a window.

Clarissa's party in the evening is a slow success. It is attended by most of the characters she has met throughout the book, including people from her past. She hears about Septimus' suicide at the party and gradually comes to admire this stranger's act, which she considers an effort to preserve the purity of his happiness. ([...])