Cryospheric components are integral to both alpine and lowland landscapes in northern Sweden. Snow covers the ground from November to May, and the ground remains frozen throughout the summer at higher elevations and in many peatlands. But, like elsewhere in the Arctic the climate here changes rapidly. This presentation focuses on how such ongoing climatic changes affect the cryohydro(geo)logy in Arctic Sweden, based on a handful of our recent studies in the area. Long-term observational data from rivers in northern Sweden indicate shifts in storage-discharge relationships caused by changing freeze-thaw dynamics and degrading permafrost. Modelling suggest that catchment storage-discharge relationships are more strongly impacted by permafrost degradation in alpine areas, than in lowlands. Although empirical studies on alpine hydrology are currently rare in the region, changes in vegetation composition have been linked to reduced growing season water availability from a loss of perennial snow and ice in alpine areas. In the lowlands, permafrost is found in peatlands below ice-cored palsa and peat plateau landforms, but widespread thawing of these landforms have been observed across the region. Modelling suggest that thaw rates increase with increasing hydraulic conductivity of surrounding ground materials and that thawing occurs most rapidly from below palsas, rather than as increases in active layer thickness. We project that peatland permafrost will disappear from the region within this century. Our ongoing studies focus on the climatic and landscape controls on groundwater levels, which influence thaw rates as well as greenhouse gas emissions from these peatlands.