
ABUS August Bremicker Söhne KG, commonly known as ABUS, is a German manufacturer of preventative security technology based in Wetter, North Rhine-Westphalia. The company name is an acronym formed from original name of the company, August Bremicker und Söhne.

August, Inc is a San Francisco home automation company, focusing on Wi-Fi connected door locks and doorbell cameras. The company was founded in November 2012 by Yves Béhar and Jason Johnson.

Banham Group is a family owned security company. Established in 1926, Banham Group is now the largest supplier of burglary and fire prevention systems in London.

Best Lock Corporation was an American publicly traded door hardware and lock manufacturer. Founded in 1925 as Best Universal Lock Company by Frank Ellison Best, the privately held company relocated from Seattle, Washington, to Indianapolis, Indiana, in 1938, where operations expanded and evolved. Product offerings are now marketed under the Best Access brand, which is one of several trademarked corporate divisions in Stanley Black & Decker's Stanley Security group.

Chubb Locks is a brand name of the Mul-T-Lock subsidiary of the Assa Abloy Group, which manufactures high security locking systems for residential, secure confinement and commercial applications.

Alonzo Edward Deitz was an American lock manufacturer who founded the A. E. Deitz lock company in Brooklyn, New York in 1861. Deitz held two patents for innovative locks with a distinctive pin tumbler arrangement parallel to the longitudinal axis of the key. His steam-powered factory with 60 employees was established at Clymer Street in Brooklyn, adjacent to the Brooklyn Navy Yard. Hundreds of different models were available in published catalogs, including padlocks and locks for doors and drawers. Deitz locks were exported worldwide during the late 19th and early 20th centuries.

dormakaba Holding AG is a global security group based in Rümlang, Switzerland. It employs around 15,000 people in over 50 countries. It formed as the result of a merger between former Kaba and former Dorma in September 2015 and is publicly traded on the SIX Swiss Exchange.

Emtek Products, Inc. is a door and cabinet hardware manufacturer, based in the City of Industry, Los Angeles County and a subsidiary of Swedish company Assa Abloy. The brand produces a range of residential lock products, including tubular locks, interior door knobs and levers, key locking hardware sets, electronic keyless locks, deadbolts, hinges, dutch door bolts and Mortise locks, and are represented by dealers and showrooms in the United States, Latin America and Canada. They also provide cabinet and drawer pulls for interior spaces like Kitchen cabinets and bathroom cabinets.

The Hall's Safe & Lock Company was an American manufacturer of locks, safes, and bank vaults throughout the second half of the 19th century.

Kryptonite is an Allegion-owned brand of bicycle lock for securing a bicycle to a pole or other fixture, when the owner wants to leave the bicycle in a public place. The basic design, made of hardened steel of circular cross section bent into a U-shape with a removable crossbar, has been emulated by numerous other manufacturers, and adapted with variations in size and shape for other applications, such as locking motorcycles.
Kwikset is an American lock and lockset manufacturer owned by Spectrum Brands Hardware and Home Improvement Group (HHI), a Division of Spectrum Brands. Originally Gateway Manufacturing Company, Kwikset was founded in California in 1946 by Adolf Schoepe, and Karl Rhinehart.

Mul-T-Lock is an Israeli locking solutions manufacturer and part of Assa Abloy.

The Nik-O-Lok Company is a company founded in 1910 with headquarters in Indianapolis, Indiana, that manufactures and leases door locks for pay toilets, along with other types of equipment for public bathrooms. Locks are designed that can be operated by manufacturer-supplied tokens or by quarters.

Sargent and Greenleaf, more commonly known among Safe and Vault technician circles as S&G, is a U.S. company that manufactures combination locks, key-operated safe and safe deposit box locks, high security military padlocks, and associated equipment.

The Wilson Bohannan Lock Company has been manufacturing padlocks for almost 160 years. This makes them America's oldest continuous padlock maker. The founder Wilson Bohannan received his first padlock patent on April 17, 1860. In that patent his first name is spelled 'Wilsin', while in subsequent patents his first name is spelled 'Wilson'. In the same year that his first patent was issued, he opened a small workshop in the rear of his Brooklyn home manufacturing padlocks. Outgrowing his home workshop, the company moved into larger quarters on Broadway and Kossuth Place, Brooklyn, New York in 1869. The company since then has moved its business in 1926 to Marion, Ohio where it currently is operating.

Yale is one of the world's oldest lock manufacturers, owned by Assa Abloy. Over its long history, Yale has received patents for dozens of its products and the company has distributed its products to more than 120 markets, including Australia, Greece, India, Kuwait, etc. Yale's headquarters are located in Stockholm.