-The morphology and properties of permafrost-affected gleyzems and peat gleyzems in the tundra landscapes of the Subpolar Urals-the southernmost mineral soils with isolated patches of high-temperature permafrost particularly sensitive to present-day climate change-are considered. The study examines in detail the morphology and cryogenic structure of the soil profiles, temperature regime, mineralogical composition, and physicochemical properties of both seasonally thawed (active) layer and underlying permafrost. A thin active layer is characterized by the predominance of peat horizons and significant gleyzation of mineral horizons; a high-ice transient layer is found in the upper permafrost. Massive cryostructure is formed in seasonally frozen horizons, and lens-type and massive-agglomerate cryostructures are found in the underlying permafrost. Peat gleyzem, in contrast to the colder gleyzem, is characterized by a relatively mild temperature regime, which is explained by the increased thickness of the heat-insulating peat horizon and a greater depth of snow cover. Permafrost-affected soils of the Subpolar Urals are confined to climate-driven ecosystem-modified permafrost. A predominance of the coarse silt fraction in soils with a shallow embedding by permafrost rocks contributes to the significant thixotropy of gleyed horizons of the active layer. Cryogenic and lithological heterogeneity of the soil profiles in the conditions of the subarctic humid climate of the mountainous territory determines the specific structure and properties of permafrost-affected gley soils of the Subpolar Urals.