朱彝尊（1629年－1709年），字锡鬯，号竹垞，浙江嘉兴人，祖籍江苏吴江，明末清初政治人物，诗人、词人、经学家。

先世江苏吴江人，明景泰四年（1453年）迁居浙江嘉兴府秀水县，曾祖朱国祚，字兆隆，号养淳，为明万历壬午科殿试状元。彝尊读书过目成诵，博通经史，擅长诗词，为浙西词派的创始者，又精于金石考证之学。诗与王士禛齐名。顺治十三年（1656年）海宁人杨雍建聘朱彝尊为西席，教授其子杨中讷。康熙元年（1662年）爆发通海案，朱彝尊避祸于浙江永嘉，奔走于山西、河北、山东一带。康熙年间举博学鸿词，授翰林院检讨，入直南书房，与修《明史》。《清史稿·朱彝尊传》的称：“当时王士祯工诗；汪琬工文；毛奇龄工考据；独彝尊兼有众长。”有《经义考》（生前刊行一百六十七卷，后人补刻为三百卷）、《日下旧闻》四十二卷、《明诗综》一百卷、《词综》三十八卷、《明词综》十二卷（书未成而卒，后由王昶整理刊刻）、《曝书亭集》八十卷等。

Zhu Yizun (Chinese:朱彝尊; pinyin:Zhū Yízūn; Wade–Giles:Chu I-tsun; 1629–1709) was an author and poet during the Qing dynasty. In his early literary career, Zhu was recognized for his talent and helped by Gong Dingzi. Zhu became the founder of the Zhexi school of ci poetry (song lyrics). Zhu Yizun was particularly influenced in this regard by the work of the Southern Song ci of Jiang Kui and Zhang Yan.