South Korea : 167
We begin our list with South Korea, which has a fleet size of 167 F-16 fighter jets, primarily belonging to the C and D variants. According to FlightGlobal, 118 of these are in active service of the South Korean Air Force, while the rest are used as training aircraft. Last month, South Korea signed a $355 million deal with Pratt & Whitney, a subsidiary of RTX Corporation, to upgrade its fleet of F-15s and F-16s.