Ulysses is a modernist novel by Irish writer James Joyce. It was first serialized in parts in the American journal The Little Review from March 1918 to December 1920 and then published in its entirety in Paris by Sylvia Beach on 2 February 1922 Joyce's 40th birthday. It is considered one of the most important works of modernist literature and has been called "a demonstration and summation of the entire movement."

Ulysses chronicles the appointments and encounters of the itinerant Leopold Bloom in Dublin in the course of an ordinary day 16 June 1904. Ulysses is the Latinised name of Odysseus the hero of Homer's epic poem the Odyssey and the novel establishes a series of parallels between the poem and the novel with structural correspondences between the characters and experiences of Bloom and Odysseus Molly Bloom and Penelope and Stephen Dedalus and Telemachus in addition to events and themes of the early 20th-century context of modernism Dublin and Ireland's relationship to Britain.

The novel is highly allusive and also imitates the styles of different periods of English literature.