Lema honorata, common name yam beetle, is a species of beetle in family Chrysomelidae, and was first described in 1873 by Joseph Sugar Baly. The holotype was collected in Nagasaki from a Discorea plant.
The host plants on which both larvae and adults feed are members of the yam family. It is an agricultural pest in Japan.
Lema honorata is found in South Korea (where it found in Gyeongbuk and Gyeongnam), and in Japan, China, Thailand, and Vietnam.