To obtain a disperse dye composition capable of dyeing in various colors such as brown, gray and beige in high reproducibility, having improved washing fastness and suitable for the dyeing of polyester fiber, etc., by including respectively specific thiophene azo compound, pyridone azo compound, etc.

This disperse dye composition contains (A) a thiophene azo compound of the formula I [X1 is H, a halogen, a (substituted)alkyl, etc.; Y1 is H, a halogen, a (substituted)aryl, etc.; Z1 is H, a halogen, cyano, etc.; R1 is H, a halogen or an alkoxy; R2 and R3 are each H, a (substituted)alkyl, etc.] and (B) a pyridone azo compound of the formula II [X2 is H, a halogen, etc.; Y2 is H, an alkoxy, etc.; R4 is H, a (sbstituted)alkyl, etc.] and/or (C) a benzothiazole azo compound of the formula III (Y3 is a halogen, an alkoxy, etc.; (m) is 1 or 2; R5 is H, an alkyl, etc.; R6 and R7 are each a hydroxyalkyl, etc.). The content of the component A is preferably 0.5-99.5 wt.% based on the total weight of the composition. The composition is preferably used for the dyeing of a hydrophobic material such as polyester fiber having a fineness of ≤1 de.