Jacob's Room is the third novel by Virginia Woolf, first published on 26 October 1922.

The novel centres, in a very ambiguous way, around the life story of the protagonist Jacob Flanders and is presented almost entirely through the impressions other characters have of Jacob. Thus, although it could be said that the book is primarily a character study and has little in the way of plot or background, the narrative is constructed with a void in place of the central character if, indeed, the novel can be said to have a 'protagonist' in conventional terms. 

Set in pre-war England, the novel begins in Jacob's childhood and follows him through college at Cambridge and into adulthood. The story is told mainly through the perspectives of the women in Jacob's life, including the repressed upper-middle-class Clara Durrant and the uninhibited young art student Florinda, with whom he has an affair. His time in London forms a large part of the story, though towards the end of the novel he travels to Italy and then Greece.

The novel is a departure from Woolf's earlier two novels, The Voyage Out (1915) and Night and Day (1919), which are more conventional in form and narration. The work is seen as an important modernist text; its experimental form is viewed as a progression of the innovative writing style Woolf presented in her earlier collection of short fiction titled Monday or Tuesday (1919).

Adeline Virginia Woolf (1882-1941) was an English author, essayist, publisher, and writer of short stories, regarded as one of the foremost modernist literary figures of the twentieth century.

During the interwar period, Woolf was a significant figure in London literary society and a member of the Bloomsbury Group.

Her most famous works include the novels Mrs. Dalloway (1925), To the Lighthouse (1927), and Orlando (1928), and the book-length essay A Room of One's Own (1929), with its famous dictum, "A woman must have money and a room of her own if she is to write fiction."