Cortinarius splendens, commonly known as the splendid webcap, is a basidiomycete mushroom of the genus Cortinarius native to Europe. It has been implicated in poisonings resulting in kidney failure, though with milder symptoms than other deadly webcaps. The species was described in 1939. It has been classed as conspecific with , although the two species have different tree hosts—the former with the European beech (Fagus sylvatica) and the latter with Norway spruce (Picea abies).