Clara Brown, also known as John G. Alden Design No. 872, is a historic racing sloop located at Buffalo in Erie County, New York. It was designed by John G. Alden and built by Goudy & Stevens Shipyard in Boothbay, Maine. It was designed in 1950 and launched in 1952. She measures 34 feet, 4 inches (10.46 m) in length, 7 feet (2.10 m) in beam, and with her fixed keel has a draft of 4 feet, 11 inches (1.50 m).