The invention relates to a pigment dispersion comprising: a condensate of or a salt between a polyallylamine and a polyester having a free carboxylic acid or the salt; a pigment derivative represented by the following general formula (1); a pigment; and an organic solvent, (P-X).sup.-[N(R.sub.1, R.sub.2, R.sub.3, R.sub.4)].sup.+ general formula (1) wherein p represents an organic dyestuff residue; X represents a sulfonic acid group or a carboxylic acid group; R.sub.1 represents an alkyl group having 5 to 20 carbon atoms; and R.sub.2, R.sub.3 and R.sub.4 each independently represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.