O''Reilly Auto Parts, officially known as O''Reilly Automotive, Inc., is a leading retailer of automotive aftermarket parts, tools, supplies, equipment, and accessories in the United States. The company was founded in 1957 by Charles H. O''Reilly and his son Charles "Chub" O''Reilly in Springfield, Missouri, and is still headquartered there.
O''Reilly Auto Parts operates through a single business segment that focuses on providing automotive aftermarket products and services to various customers, including: