This category contains articles related to the lichens of western South America.

• For the purposes of this category, "western South America" is defined in accordance with the World Geographical Scheme for Recording Plant Distributions (WGSRPD); that is, it is defined as a region of Southern America comprising Bolivia, Colombia, Ecuador, Peru, and Galápagos (treated as distinct from Ecuador).

• Taxa of the lowest rank are always included. Higher taxa are included only if endemic.