Type 4 or Type Four may refer to:
Military
edit- Type 4 Chi-To, a Japanese tank
- Type 4 Ke-Nu, a Japanese tank
- Type 4 Ka-Tsu, a Japanese amphibious landing craft
- Type 4 Ho-Ro, a Japanese self-propelled gun
- Type 4 Ha-To, a Japanese self-propelled gun
- Type 4 75 mm AA gun, a Japanese anti-aircraft gun
- Rota Gun, anti-tank rocket launchers
- Type 4 20 cm rocket launcher, a Japanese mortar rocket
- Type 4 15 cm howitzer, a Japanese howitzer
- Type 4 rifle, a Japanese experimental rifle
Transportation
edit- British Railways Type 4 Diesel locomotives
- Type Four platform, a front-wheel-drive car platform
- Volkswagen Type 4, a four-door sedan
- Peugeot Type 4
Other uses
edit- Type 4 encryption, an encryption algorithm
- Type IV collagen, a class of collagen
- Type-4 hypersensitivity, a class of Hypersensitivity reactions that involves T-cells
- IEC Type IV, one of the four "type" classifications of audio cassette formulation