Demotispa panamensis is a species of beetle of the family Chrysomelidae. It is found in Panama.
Adults reach a length of about 4.5-4.6 mm. They have a yellow head and legs, while the pronotal disc is argillaceous-red and the elytral disc and inner part of the margin of the elytra are red. The six basal segments of the antennae are yellow, segments 7-10 are black and segment 11 is yellow with an infuscate base.
The recorded host plants for this species are Chamaedorea wenlandiana and Oenocarpus panamanus.
The species is named after the type location, Panama.