Repeller may refer to:
The opposite of an attractor, in dynamical systems' theory (more frequently than "repellor") An electrode at a voltage to repel charge carriers (in vacuum or in a plasma) Animal repeller A device or plant that repels vermin, in horticulture or gardening Reppeller, in religion, fantasy, science fiction, etc., a god, a magic item, or technical device with the power to protect against offenders Turbine rotor in a free flow, e.g. a wind turbine (the term is rarely used in English) A fictional villain in the Batman Beyond animated television series season 3 episode "Untouchable"
See also
Rapeller