A. agrestis may refer to:
Achlidon agrestis, a crab species Amynthas agrestis, a worm species Anthoceros agrestis, a bryophyte species Antiblemma agrestis, a moth species Astragalus agrestis, a flowering plant species Austrodrillia agrestis, a sea snail species Auximobasis agrestis, a moth species
Synonyms Agoseris agrestis, a synonym of Agoseris glauca, a flowering plant species Alopecurus agrestis, a synonym of Alopecurus creticus, a grass species Anthemis agrestis, a synonym of Anthemis arvensis, a flowering plant species