The Sterling and Francine Clark Art Institute, commonly referred to as the Clark, is an art museum and research institution located in Williamstown, Massachusetts, United States. Its collection consists of European and American paintings, sculpture, prints, drawings, photographs, and decorative arts from the fourteenth to the early twentieth century. The Clark, along with the Massachusetts Museum of Contemporary Art and the Williams College Museum of Art (WCMA), forms a trio of art museums in the Berkshires. The institute also serves as a center for research and higher learning. It is home to various research and academic programs, which include the Fellowship Program and the Williams College Graduate Program in the History of Art, as well as one of the most distinguished research libraries in the country, with more than 295,000 volumes in over 72 languages. The Clark is visited by 200,000 people a year, and offers many educational programs for visitors of all ages throughout the year.

Williamstown is a town in Berkshire County, Massachusetts, United States. It shares a border with Vermont to the north and New York to the west. Located in Berkshire County, the town is part of the Pittsfield, Massachusetts metropolitan statistical area. The population was 7,513 at the 2020 census. A college town, it is home to Williams College, the Clark Art Institute and the Tony-awarded Williamstown Theatre Festival.