The LoJack Stolen Vehicle Recovery System is an aftermarket vehicle tracking system that allows vehicles to be tracked by police after being stolen. The manufacturer claims a 90% recovery rate. The name "LoJack" was coined to be the "antithesis of hijack", meaning the theft of a vehicle through force.

LoJack units can be installed in cars, commercial trucks, construction vehicles, and motorcycles. LoJack Corporation claims that over 200,000 vehicles have been recovered worldwide since the product was introduced.