25 species of 8 genera of clavarioid fungi were found in the Taimyr tundras. The taxonomical structure of the studied biota is close to adjacent Yamal-Gydan and Arctic Jakutian biotas of clavarioid fungi. A group of active species was defined (Multiclavula corynoides, Typhula crassipes, T. culmigena, T. lutescens, T. variabilis). Spatial structure analysis has shown a significant difference between western and eastern Taimyr as well as between “high Arctic” (Arctic deserts and northern Arctic tundras) and “low Arctic” (southern Arctic tundras, northern and southern Hypoarctic tundras) biotas of clavarioid fungi. Keywords: Arctic, clavarioid fungi, spatial structure, Taimyr, tundra.