The Joslyn Art Museum is the principal fine arts museum in the state of Nebraska, United States of America. Located in Omaha, it is the only museum in the state with a comprehensive permanent collection. Although it includes works from antiquity to the present day, its greatest strengths are in nineteenth and twentieth century American and European art.

The museum opened in 1931, the product of a private donation from the Joslyn family, whose name it bears.It occupies a large and impressive Art Deco building designed by Alan McDonald, largely constructed of marble of many different kinds, close to downtown Omaha. There are many decorative panels on Native American themes. A substantial extension, designed by Sir Norman Foster, opened in 1994.