The HESA Saeqeh (Persian: صاعقه Sâ'eğe, "Thunderbolt"), alternatively spelt Sa'eqeh; Saegheh, or Saeqeh-80,[1] is an Iranian-built single-seat jet fighter, derived from the American Northrop F-5.

[8] Iran has announced that it will test fly the other variants of the Saeqeh in the near future which will differ from the previous aircraft due to major changes in its weapon system, aerodynamics and operational range.

[9] In September 2010, Iran displayed the first squadron of Saeqeh fighter jets produced during an air show staged during the military parades at the beginning of the Iranian Sacred Defence Week according to the FARS News Agency.

The Commander of the Islamic Republic of Iran Air Force, Brigadier-General Ahmad Mighani, said that the Saeqeh is up-to-date in terms of aerodynamic balance and in possessing missile and radar systems.

Fuselage, landing gear, engines, weaponry and cockpit instruments appear identical to the F-5E, which indicates that the Saequeh is not a new-built jet fighter, but a modification of existing Northrop F-5s.