Any of numerous insects of the families Locustidae or Acrididae (short-horned grasshoppers) and Tettigoniidae (long-horned grasshoppers): Grasshoppers are often destructive to plants and characteristically have long hind legs adapted for jumping.

Around the world there are hundreds of species of grasshoppers which is a group that includes crickets and locusts.

Grasshoppers are difficult to see in the grass where they live, but they can often be heard since each species has a characteristic song, produced by rubbing the wings or legs together.

The song is used by males to attract females and, less frequently, by females to attract males.