Malmidea attenboroughii is a species of corticolous (bark-dwelling), crustose lichen in the family Malmideaceae.

The lichen was formally described in 2019 by Martin Kukwa, Beata Guzow-Krzemińska, Magdalena Kosecka, Agnieska Jabłońska, and Adam Flakus.

The species epithet honours English broadcaster and naturalist Sir David Attenborough, "for his major contributions to the popularization of knowledge about biodiversity and nature protection".

Its surface texture is described as "minutely verrucose" (covered with small pimples) to "granulose-isidiate" (covered in tiny elongated granule-like thallus outgrowths that resemble isidia); the individual granules are 50–125 μm in diameter.

The apothecia are rounded to irregular in outline, measuring up to 1.0 mm in diameter, with a flat flesh-coloured to brown disc.