An aqueous ink composition comprising: an aqueous medium; and resin microparticles, wherein a polymer constituting the resin has [a] to [c] as constitutional components, a ratio of a content X% by mass of a constitutional component [a] in the polymer to a content ZA% by mass of a constitutional component [b] in the polymer (X:ZA) is 1:4 to 13 and the ratio of the content X% by mass of the constitutional component [a] in the polymer to a content ZC% by mass of a constitutional component [c] in the polymer (X:ZC) is 1: 0.3 to 1.5, and the weight-average molecular weight of the polymer is 100,000 to 1,000,000, wherein [a] is a constitutional component represented by General Formula , and/or a constitutional component represented by General Formula , in the formulae, R 1 and R 2 each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A 1 represents -O- or -NR 3 -, and R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A 2 represents a single bond, -COO-, or -CONH-, L 1 represents an alkylene group having 6 to 22 carbon atoms and L 2 represents a divalent linking group having 6 to 23 carbon atoms, and M 1 and M 2 represent a hydrogen atom, an alkali metal ion, or an ammonium ion, wherein [b] is a vinyl compound component that has an aromatic ring or an aliphatic ring, and does not have a carboxyl group or a salt thereof and/or a vinylidene compound component that has an aromatic ring or an aliphatic ring, and does not have a carboxyl group or a salt thereof, and wherein [c] is an alkyl (meth)acrylate ester component that has an alkyl group having 4 to 12 carbon atoms. an aqueous medium; and resin microparticles, wherein a polymer constituting the resin has [a] to [c] as constitutional components, a ratio of a content X% by mass of a constitutional component [a] in the polymer to a content ZA% by mass of a constitutional component [b] in the polymer (X:ZA) is 1:4 to 13 and the ratio of the content X% by mass of the constitutional component [a] in the polymer to a content ZC% by mass of a constitutional component [c] in the polymer (X:ZC) is 1: 0.3 to 1.5, and the weight-average molecular weight of the polymer is 100,000 to 1,000,000, wherein [a] is a constitutional component represented by General Formula , and/or a constitutional component represented by General Formula , in the formulae, R 1 and R 2 each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A 1 represents -O- or -NR 3 -, and R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A 2 represents a single bond, -COO-, or -CONH-, L 1 represents an alkylene group having 6 to 22 carbon atoms and L 2 represents a divalent linking group having 6 to 23 carbon atoms, and M 1 and M 2 represent a hydrogen atom, an alkali metal ion, or an ammonium ion, wherein [b] is a vinyl compound component that has an aromatic ring or an aliphatic ring, and does not have a carboxyl group or a salt thereof and/or a vinylidene compound component that has an aromatic ring or an aliphatic ring, and does not have a carboxyl group or a salt thereof, and wherein [c] is an alkyl (meth)acrylate ester component that has an alkyl group having 4 to 12 carbon atoms. <EOS>