Elm Court is an Italianate style mansion located at 315 Bellevue Avenue in Newport, Rhode Island.

Part of the Bellevue Avenue Historic District, it was built in 1853 and designed in the Italianate style by George Champlin Mason Sr.

In 1882, McKim, Mead & White renovated the remodeled and enlarged the house after it was bought in c. 1875 by Adele L. S. Stevens, who also had the interiors redone by Ogden Codman Jr.

Shortly after the renovations were completed, Adele began a relationship with the Marquis de Talleyrand, who was himself married to another American heiress, Elizabeth Beers-Curtis, then left her husband and moved to Paris.

[4][3] Work passed the estate to his daughter, Frances Ellen Work, who'd recently divorced her first husband (James Roche, 3rd Baron Fermoy),[5] and moved back to America with her daughter, Cynthia Roche, who had her debut in 1902 at a ball at Elm Court.