Model Variants (Including Prototypes)
XA4D-1 - Prototype Designation of which nine produced.
A4D-1 - First Production Models
A-4E - Improved throughout; Heavier airframe powered by a Pratt & Whitney J52 powerplant.
A-4F - Final Navy Version Skyhawk featuring noticeable "hump" on airframe spine housing additional avionics equipment.
A-4M Skyhawk II - United States Marine Corps Version featuring enlarged canopy for increased visibility, increased take-off weight and more powerful J52-P-408 powerplant.
TA-4F - Two-seat Navy trainer Variant
A-4P - Argentinian Export Model
A-4Q - Argentinian Export Model
A-4AR "Fightinghawks" - Argentinian Export Model based on A-4M variant with updated avionics, HUD system and ARG-1 radar system.
A-4H - Israeli Export Model based on A-4E variant.
A-4N - Israeli Export Model based on A-4M variant.
A-4S - Singapore Export Model
A-4K - New Zeland Export Model with upgraded HUD, avionics, twin-CRT displays and HOTAS.
T/A-4KU - Kuwaiti Export Model (sold to Brazil and stationed on Sao Paulo aircraft carrier).