Pratt & Whitney J52

J52/JT8A
A J52 cut-out showing its two spools
TypeTurbojet
National originUnited States
ManufacturerPratt & Whitney
First run1955
Major applications
Number built>5,000
Developed fromPratt & Whitney J57
Developed intoPratt & Whitney JT8D

The Pratt & Whitney J52 (company designation JT8A) is an axial-flow dual-spool turbojet engine originally designed for the United States Navy, in the 40 kN (9,000 lbf) class. It powered the A-6 Intruder and the AGM-28 Hound Dog cruise missile. As of 2021 the engine was still in use in models of the A-4 Skyhawk.

The engine is the basis for the Pratt & Whitney JT8D, a popular civilian low-bypass turbofan engine.