HMS Courageux was a 74-gun third rate ship of the line of the Royal Navy, launched on 26 March 1800 at Deptford. She was designed by Sir John Henslow as one of the large class 74s, and was the only ship built to her draught. As a large 74, she carried 24 pdrs on her upper gun deck, instead of the 18 pdrs found on the middling and common class 74s. Courageux was placed on harbour service in 1814, and was broken up in 1832.