A heavy rescue vehicle, sometimes referred to as a Rescue Company, Rescue Squad or Technical Rescue, is a type of specialty firefighting or EMS apparatus. Essentially giant toolboxes on wheels, they are primarily designed for technical rescue situations such as vehicle extrications following traffic collisions, confined space rescues, rope rescues, swiftwater rescues, or building collapses.

In the U.S., NFPA regulations 1006 and 1670 provide guidelines and regulations for the operation of heavy rescue vehicles and also state that all "rescuers" must have medical training to perform any technical rescue operation, including cutting the vehicle itself. In most rescue environments, fire department personnel conduct rescue operations working hand-in-hand with medical personnel, such as EMTs or paramedics.

In addition to fire and rescue departments, tram or railway companies may have their own dedicated heavy rescue squads. For example, railway rescue squads may carry very specialized equipment for railway accidents like hydraulic jacks with capacity for lifting locomotives or even moving them horizontally, and equipment for tank car accidents.

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