The solubilities of carbon dioxide in aqueous solutions of 2-amino-2-ethyl-1,3-propanediol (AEPD) were measured at 313.15, 323.15, and 333.15 K over the partial pressure range of carbon dioxide from 1 to 3000 kPa. The concentrations of aqueous AEPD solutions were 10 and 30 mass%. The solubilities of carbon dioxide in aqueous 10 mass% AEPD solutions at 313.15 K and 30 mass% at 333.15 K were compared with those in aqueous solutions of various amines such as monoethanolamine (MEA), 2-amino-2-methyl-1,3-propanedioI (AMPD), 2-amino2-methyl-1-propanol (AMP), and N-methyldiethanolamine (MDEA).