Imidacloprid is an insecticide manufactured by Bayer Cropscience (part of Bayer AG). It is sold under a variety of trade names including Kohinor, Admire, Advantage, Gaucho, Merit, Confidor, Hachikusan, Premise, Prothor, and Winner.

Imidacloprid was first patented in the United States in U.S. Pat. No. 4,742,060, on May 3 1988, by Nihon Tokushu Noyaku Seizo K.K. of Tokyo, Japan.

In France, its use (as Gaucho) has become controversial in terms of a possible link to derangement of behavior in domesticated honeybees. See Imidacloprid effects on bee population.