Abstract: Changes in surface layer aerosol concentrations induced by climate change are important for understanding regional air quality. In this study, the impact of climate change on surface-layer aerosol concentrations over East Asia were investigated using multi-model results from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) under the RCP8.5 scenario during 2000-2100. With anthropogenic emissions of aerosols and aerosol precursors kept at year 2000 levels, the annual mean concentrations of surface-layer sulfate, organic carbon, and black carbon over northern China (31°N-45°N, 105°E-122°E) were simulated to increase by 28%, 21%, and 9%, respectively, owing to climate change over 2000-2100. Compared to that in 2000, annual mean surface-layer nitrate concentration in 2100 over eastern China was simulated to decrease by 30% by climate change alone. The climate-induced changes in fine particulate matter (PM_2.5) concentrations were simulated to have large seasonal variation. Due to significant decreases in nitrate concentrations in the winter, wintertime PM_2.5 concentrations over eastern China were simulated to decrease by 15% over 2000-2100. Furthermore, the changes in summertime PM_2.5 concentrations during 2000-2100 were found to have different patterns in northern and southern China; PM_2.5 concentrations in northern China would increase by 16%, while those in southern China would decrease by 9%.