Deroceras agreste is a species of air-breathing land slug in the family Agriolimacidae.

It is pale brown, tan,[1] "buff or oatmeal-coloured",[2] with a darker head and tentacles.

[1] This species lives in moist grassy and marshy habitat types.

It feeds on dead and living plant material, and is sometimes an agricultural pest on crops such as lettuce.

[1] This species is native to Asia and northern and central Europe.