The HESA Yasin (Persian: یاسین) is an Iranian training jet unveiled on October 17, 2019.

It is primarily designed for training fighter pilots, though it may also be used for close air support missions.

[5][6] The Yasin Trainer Jet is an Iranian-developed aircraft designed for military training purposes.

On December 1, 2023,[7] the final prototype of the Yasin successfully completed its first flight, marking a significant milestone in its development and the Iranian aerospace industry.

On March 20, 2023, the new and production-standard prototype of the Yasin was unveiled, and its production line was officially launched.