詹姆斯·奥古斯丁·阿洛伊修斯·乔伊斯（James Augustine Aloysius Joyce，1882年2月2日－1941年1月13日），爱尔兰作家和诗人，20世纪最重要的作家之一。代表作包括短篇小说集《都柏林人》（1914）、长篇小说《一个青年艺术家的画像》（1916）、《尤利西斯》（1922）以及《芬尼根的守灵夜》（1939）。

尽管乔伊斯一生大部分时光都远离故土爱尔兰，但早年在祖国的生活经历却对他的创作产生了深远的影响。他的大部分作品都以爱尔兰为背景和主题。他所创作的小说大多根植于他早年在都柏林的生活，包括他的家庭、朋友、敌人、中学和大学的岁月。乔伊斯是用英文写作的现代主义作家中将国际化因素和乡土化情节结合最好的人。

James Augustine Aloysius Joyce (2 February 1882 – 13 January 1941) was an Irish novelist and poet. He contributed to the modernist avant-garde, and is regarded as one of the most influential and important authors of the twentieth century.

Joyce is best known for Ulysses (1922), a landmark work in which the episodes of Homer's Odyssey are paralleled in an array of contrasting literary styles, perhaps most prominent among these the stream of consciousness technique he utilized. Other well-known works are the short-story collection Dubliners (1914), and the novels A Portrait of the Artist as a Young Man (1916) and Finnegans Wake (1939). His other writings include three books of poetry, a play, occasional journalism, and his published letters.