Four by four/Four-wheel drive (disambiguation)

Four-wheel drive, Four by four, and 4x4 is a four-wheeled vehicle with a drivetrain that allows all four wheels to receive torque from the engine simultaneously.

It may also refer to:

• Four Wheel Drive, a vehicle manufacturer
• Four Wheel Drive (album), a 1975 album by Bachman–Turner Overdrive
• Four-wheel driving, the sport of off-roading
• 4x4 (pronounced 4 by 4), colloquial British English usually for a sport utility vehicle (SUV)
• 4x4, the codename for the AMD Quad FX platform
• 4x4 Garage, an electronic music genre
• Four-by-four or 4x4, a size of lumber
• "4 x 4" (CSI), a 2005 episode of CSI: Crime Scene Investigation
• 4x4 (telenovela), a 2008 Argentine telenovela
• Rubik's Revenge the 4x4x4 version of the Rubik's Cube
• 4 x 4 (album), a 2000 album by Carla Bley
• 4x4 (Casiopea album), released in 1982