Parker-Hannifin Corporation, originally Parker Appliance Company, is an American multinational industrial manufacturing company specializing in motion and control technologies. Its corporate headquarters are in Mayfield Heights, Ohio, in Greater Cleveland. The company was founded in 1917 and has been publicly traded on the New York Stock Exchange since 1964. The firm is one of the largest companies in the world in motion control technologies, including aerospace, climate control, electromechanical, filtration, fluid and gas handling, hydraulics, pneumatics, process control, and sealing and shielding. Parker employs about 61,000 people globally. In 2024, Parker-Hannifin ranked #216 in the Fortune 500. Wikipedia