再生制动（Regenerative brake）亦称反馈制动，是一种使用在道路机动车或铁路列车上的制动技术。在制动时把车辆的动能转化及保存起来；而不是变成无用的热能。

最普通的制动方法会把车的动能以摩擦直接转化成热能。「再生制动」和另一种原理接近，但较为简单的电阻制动（Dynamic Braking），则是把电动机转成发电机使用，把车辆的动能转成电能。电阻制动通常只会把产生的电，经过电阻转成无用的热放走。而再生制动则会把电力保存起来或透过电网送走，再生循环使用。使用再生制动的车辆仍然会有传统的摩擦制动，提供快速、强力的制动。一般的再生制动只会把约百分之三十的动能再生使用，其余的动能还是成为热。这效率根据不同的使用环境而有所不同。

A regenerative brake is an energy recovery mechanism which slows a vehicle or object by converting its kinetic energy into a form which can be either used immediately or stored until needed. This contrasts with conventional braking systems, where the excess kinetic energy is converted to unwanted and wasted heat by friction in the brakes. In addition to improving the overall efficiency of the vehicle, regeneration can greatly extend the life of the braking system as its parts do not wear as quickly.