Merwin, Hulbert, and Co. or Merwin Hulbert was an American firearms designer and marketer based in New York City which produced revolvers and rifles from 1876 through 1916. The firearms were manufactured by a subsidiary company, Hopkins & Allen of Norwich, Connecticut. Merwin Hulbert's designs had influenced other gunmakers of the time, such as Meriden Firearms Co., Harrington & Richardson, Forehand & Wadsworth, and Iver Johnson.
During the late 19th century, Merwin Hulbert revolvers were used by police departments of many cities in the eastern United States.
Joseph Merwin was involved with marketing and manufacturing revolvers as early as 1856 when he formed an arms company known as Merwin & Bray. This company folded by 1874. In 1876 Merwin formed a partnership with William and Milan Hulbert, who owned 50% interest in Hopkins & Allen. Merwin and Hulbert not only designed firearms, but imported firearms, and retailed firearms and other goods in a large sporting goods endeavor. Merwin and Hulbert additionally purchased several firearms manufacturers. Author Art Phelps opined that if Merwin and Hulbert had not marked the revolvers with the manufacturers name 'Hopkins and Allen' (known for inexpensive and poor quality weapons), the Merwin Hulbert would be as well known as Colt, Smith & Wesson, and Remington.
The company made numerous innovative designs such as folding hammers on their revolvers for pocket carry and a unique takedown system, but was plagued by financial missteps. Payment for three sizable shipments to Russia were never realized. The bankruptcy of subsidiary Evan's Rifle Company cost Merwin and Hulbert $100,000. A company associated literally stole the firm's operating capital and disappeared. During 1880–1881, Merwin and Hulbert was in receivership, though it was able to recover.