T40

T40 or T-40 may refer to:

Aviation

• Allison T40, an American turboprop engine
• Lockheed T-40 JetStar, a proposed American jet trainer
• McGehee Catfish Restaurant Airport, Love County, Oklahoma, United States
• Turner T-40, an American homebuilt aircraft

Automobiles

• Covini T40, an Italian sports car
• JAC T40, a Chinese SUV
• T-40 (tractor), a Soviet farm tractor

Weapons and armour

• T-40 tank, a Soviet amphibious tank
• T40/M9 Tank Destroyer, an American gun motor carriage
• T40/M17 Whizbang, an American tank-based rocket launcher
• MKEK T-40, a Turkish grenade launcher

Other uses

• T40 (classification), a disability sport classification
• IBM ThinkPad T40, a laptop