Moog Inc. (/moʊɡ/ MOHG) is an American-based designer and manufacturer of electric, electro-hydraulic and hydraulic motion, controls and systems for applications in aerospace, defense, industrial and medical devices.

[6] In 2018, Moog and the University at Buffalo announced a project to use machine learning algorithms to differentiate acceptable from non-conforming areas of metal parts produced using additive manufacturing techniques.

[7] Moog also has notable track record of providing a range of control axes on Formula 1 racing cars and has been involved in this business for over 30 years.

Various launch vehicles and missiles use Moog's steering and propulsion controls, and the International Space Station uses its couplings, valves and actuators.

Products include the LEROS family of liquid-propellant thrusters, acquired by ARC in 1998 and developed in the 1990s by Royal Ordnance (later part of British Aerospace) in the United Kingdom; Moog operated a manufacturing facility at Westcott, Buckinghamshire on the former Royal Ordnance site, until 2017 when the ISP business was acquired by Nammo.

For the plastics and machinery market Moog designs, manufactures and integrates systems for all axes of injection and blow molding machines using both hydraulic and electric technology.

Metal forming markets use Moog designed and manufactured systems that provide control of position, velocity, force and other parameters.

As a result of the acquisition of the Power and Data Technologies Group of the Kaydon Corporation in July 2005, Moog entered into the market of marine applications.

In 2019, Moog introduced a new project that intends to use a unique model based on block-chain and 3D printer to produce airplane parts, on demand.

Applications of these products include controlled delivery of fluids to the body, nutrition, post-operative pain management, regional anesthesia, chemotherapy and antibiotics.

Dempsey Ventures, based in Grand Rapids, Michigan, is a private equity firm focused on healthcare products.

In 2009, Moog added engineering expertise as well as Distance Measuring Equipment (DME) and Direction Finding (DF) products through the acquisition of Fernau Avionics, Ltd.