The Learjet 25 was introduced in 1967 as a ten-seat twin-engine, high-speed business jet aircraft manufactured by Learjet aviation company. It is a stretched version of the Learjet 24. The forst test flight of the model took place on August 12, 1966, and it received FAA certification on October 10, 1967. Delivery began in November of 1967.

Two General Electric CJ610-6 turbojet engines power the Learjet 25 with 2950 pounds of thrust. The jet's cabin was extended by 4 feet to seat three passengers more than the Learjet 24. It was designed with a higher rate of climb, as well as higher cruising speeds of approximately Mach 0.76.

Production of the Learjet 25 ended in 1982, with a total of 369 aircraft being built. Primary operators of this jet include the United States, Canada, the Mexican Navy, and the Bolivian Air Force