The Arctic coasts, with their diverse landscapes of ice, rock, and sediment, are profoundly affected by climate change. As the Arctic warms at a rate more than twice that of the rest of the Northern Hemisphere, the consequences are severe. This chapter explores five key ways global warming impacts these sensitive ecosystems: permafrost degradation, thermal denudation, thermal abrasion, longer sea-ice-free periods, and glacier retreat. These processes accelerate erosion, release greenhouse gases such as methane, alter coastal landscapes, and disrupt ecosystems, affecting both local communities and global systems. The chapter also highlights how reduced sea ice amplifies warming, and retreating glaciers reshape coastlines, uncovering new landforms. Through vivid examples and detailed visuals, this chapter uncovers the intricate interplay between climate change and Arctic coastal dynamics, inspiring readers to understand and address these pressing challenges.