Impactor may refer to: * A large meteoroid, asteroid, comet, or other celestial object which causes an

impact event An impact event is a collision between astronomical objects causing measurable effects. Impact events have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effe ...

* Impactor (''Transformers''), a fictional character *

Impactor (spacecraft) A lander is a spacecraft that descends towards, then comes to rest on the surface of an astronomical body other than Earth. In contrast to an impact probe, which makes a hard landing that damages or destroys the probe upon reaching the surface, ...

, a craft designed for high-velocity landing *

Impact wrench An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a ro ...

, a power tool * IMPACTors, former name of the Japanese band IMP.

See also