Booster may refer to:
In science and technology:
- Booster (electric power), a motor-generator set used for voltage regulation in direct current electrical power circuits
- Booster dose, or booster shot, in medicine, a vaccination given after a previous vaccination
- Booster rocket used in space flight to provide the main thrust in the initial phase of the rocket's flight
- Booster engine, extra cylinders on a steam locomotive, driving the trailing truck or a tender truck, to give more power on starting
- Explosive booster, a bridge between a low energy explosive and a low sensitivity explosive
- A co-channel repeater in broadcasting, used to improve signal strength
In amusement park rides:
In other uses:
See also