The surface tension of aqueous binary solutions of 1-amino-2-propanol and 3-amino-1-propanol and aqueous ternary solutions of these amines with diethanolamine, triethanolamine, and 2-amino-2-methyl-1-propanol was measured at temperatures from 298.15 K to 323.15 K. For binary mixtures, the concentration range was 0-100 mass percent alkanolamine, and for ternary mixtures, the concentration range for each amine was 0-50 mass percent. The experimental values for binary mixtures were correlated with mole fraction by an empirical equation (the maximum deviation was in both cases always less than 0.2%).