The 9th Connecticut Regiment was a regiment of the Continental Army during the American Revolutionary War. It was first called Webb's Additional Continental Regiment (after its colonel, Samuel Blachley Webb) before being added to the Connecticut Line in 1780. It saw action at Setauket in 1777, Rhode Island in 1778, and Springfield, New Jersey in 1780, and was generally active in the defense of Connecticut, southern New York, and northern New Jersey. It was merged into the reorganized 2nd Connecticut Regiment in January 1781.