Air Transport Services Group (ATSG), founded in 1980, is an American aviation holding company specializing in air cargo transportation and related services. The company’s core mission is to provide reliable, efficient air cargo solutions globally. ATSG offers a range of services through its subsidiaries, including aircraft leasing, maintenance, and ground services. Its primary focus is on leasing converted Boeing 767 freighter aircraft, making it the world's largest lessor in this category.

Notable affiliated people include Joe Hete, a key figure in the company's growth. ATSG has attracted significant investment from institutions recognizing its market leadership. Key achievements include maintaining the largest fleet of converted Boeing 767 freighters and expanding its service offerings through subsidiaries like Cargo Aircraft Management and Airborne Global Solutions. The company's impact is marked by its critical role in global air cargo logistics, supporting both domestic and international carriers.