辛克莱·刘易斯（Sinclair Lewis，1885年2月7日－1951年1月10日），美国小说家、短篇故事作家、剧作家，在1930年因“他充沛有力、切身和动人的叙述艺术，和他以机智幽默去开创新风格的才华”获得诺贝尔文学奖，是第一个获得该奖项的美国人。他的作品深刻而批判性地描述美国社会和资本主义价值，代表作有《大街》（1920年）和《巴比特》（1922年）等。

「刘易斯一生的创作态度是十分严谨的，每写一书，他都认真总结自己的生活经历，访问各种人物，实地调查市镇历史，读上百本和创作主题有关的书籍和手记。正因如此，刘易斯写的《大街》、《巴比特》成为美国城镇社会生活的百科全书。此外，刘易斯是一位讽刺艺术大师，在他的各部小说中，刘易斯都极其自如地运用方言、反讽、对比、夸张、譬喻、笑谈、警语、刻薄等手法，自然妥帖、幽默诙谐地传达出人物的举止动态，令人在忍悛不禁中陷入沉思。」(孟宪忠语)

Harry Sinclair Lewis (/ˈluːɪs/; February 7, 1885 – January 10, 1951) was an American novelist, short-story writer, and playwright. In 1930, he became the first writer from the United States to receive the Nobel Prize in Literature, which was awarded "for his vigorous and graphic art of description and his ability to create, with wit and humor, new types of characters." His works are known for their insightful and critical views of American capitalism and materialism between the wars. He is also respected for his strong characterizations of modern working women. H. L. Mencken wrote of him, "[If] there was ever a novelist among us with an authentic call to the trade ... it is this red-haired tornado from the Minnesota wilds."