Lema trivittata, known generally as the three-lined lema beetle or three-lined potato beetle, is a species of leaf beetle in the family Chrysomelidae. It is found in Central America and North America. It is an introduced species in Australia
These two subspecies belong to the species Lema trivittata:
L. trivittata resembles and is closely related to Lema daturaphila and Lema bilineata.