Solvent transport across anion-exchange membranes was measured for aqueous KF, KCl, KNO3 (or NaNO3), KIO3, HCOONa, CH3COONa (or K), C6H5COONa, C6H5SO3Na and p-CH3C6H4SO3Na solutions under a temperature difference and an osmotic pressure difference. Hydrocarbon-type anion-exchange membranes Neosepta(R) AM-1, Aciplex(R) A-201 and A-221, test membranes STA-1 to STA-5, and fluorocarbon-type anion-exchange membrane Tosflex(R) IE-DF 17 were used. The water content is represented by the unit : g H2O per g dry membrane without the weight of anhydrous counterions. Plots of the volume flux against the temperature difference of both side solutions gave straight lines starting from zero. The direction of thermoosmosis was from the cold to the hot side. The order of water content of membranes is F- > IO3- > Cl- > NO3- for inorganic ions and CH3COO- > HCOO- > C6H5COO- > p-CH3C6H4SO3- (or C6H5SO3-) for organic ions regardless of the type of membrane. The order of the absolute value of the entropy difference between transported entropy in membranes and partial molar entropy of water in the external solutions is IO3- > F - > Cl- > NO3- for inorganic ions and C6H5COO- > CH3COO- > HCOO- for organic ions for all membranes.