A car wash is a facility used to clean the exterior and, in some cases, the interior of motor vehicles. Car washes can be self-serve, fully automated, or full-service with attendants who wash the vehicle.

It may also be an event where people pay to have their cars washed by volunteers as a method to raise money for some purpose.

Conveyorized automatic car washes consist of tunnel-like buildings into which customers (or attendants) drive. After pulling up to the tunnel entrance, an attendant guides the customer onto the conveyor.