The Dauntless was a 19th-century wooden yacht schooner, designed and built in 1866 by Forsyth & Morgan at Mystic Bridge, Connecticut, and owned and sailed by noted yachtsmen, among them James Gordon Bennett Jr. and Caldwell Hart Colt. She was first called the L'Hirondelle and later renamed the Dauntless. The Dauntless was in three Trans-Atlantic matches for the New York Yacht Club. She came in fourth in an unsuccessful America’s Cup defense in 1870.