'''Smearwort''' is a common name for several plants and may refer to:
*''Aristolochia rotunda'', in the family Aristolochiaceae *''Blitum bonus-henricus'', in the family Amaranthaceae
<gallery mode="packed"> File:Aristolochiaceae_-_Aristolochia_rotunda.JPG|Flower of ''Aristolochia rotunda'' File:Illustration_Chenopodium_bonus-henricus0_clean.JPG|''Blitum bonus-henricus'' </gallery>
{{Plant common name}}