Florence Griswold Museum

The Florence Griswold Museum is an art museum at 96 Lyme Street in Old Lyme, Connecticut centered on the home of Florence Griswold (1850–1937), which was the center of the Old Lyme Art Colony, the main center of development of American Impressionism. The museum is noted for its collection of American Impressionist paintings. The house was designated a National Historic Landmark in 1993.

In 2001, the Museum acquired the corporate collection of the Hartford Steam Boiler Inspection and Insurance Company, once the world's largest insurer against equipment breakdown.The collection included 157 oil paintings, 31 works on paper and 2 works of sculpture, all Connecticut-related.