Peperomia tenuimarginata is a species of flowering plant in the genus Peperomia endemic in Colombia. It primarily grows on wet tropical biomes. Its conservation status is Threatened.
It was described in 1950 by William Trelease and Yunck. in ', from specimens collected by Ellsworth Paine Killip. It got its name from the description of the leaves.
The first specimens where collected in Colombia. It is endemic in Colombia, specifically Antioquia and Valle del Cauca. Its elevation range is 900âÂÂ2400 meters. It grows on wet tropical biomes.
This species is assessed as Threatened, in a preliminary report.