The KF-21 Boramae is a cutting-edge fighter aircraft developed by South Korea's Korea Aerospace Industries (KAI) in collaboration with Indonesia's PT Dirgantara Indonesia (PTDI). Representing a significant milestone in South Korea's aerospace industry, the KF-21 Boramae combines advanced technology, stealth features, and superior performance capabilities. With its sleek and aerodynamic design, the Boramae offers enhanced maneuverability and high-speed capabilities, making it a formidable asset in air combat situations. The aircraft's state-of-the-art avionics, including an active electronically scanned array (AESA) radar system and advanced sensors, provide exceptional situational awareness and superior target detection capabilities. The KF-21 Boramae is equipped with a variety of air-to-air and air-to-ground weapons, ensuring its effectiveness in a range of missions. Because the Boramae does not currently have internal weapons bays, it is not considered a fifth generation fighter even though its other attributes suggest it aspires to be. This may change before the end of development.

With its indigenous development and advanced features, the KF-21 Boramae demonstrates South Korea's commitment to self-reliance in defense technology and its ability to produce advanced fighter aircraft that meet the demands of modern warfare. Indonesia is funding 20% of the KF-21's development costs and will also bring the type into service.

'Entered service' is defined according to the KF-21's Wikipedia page.