PROBLEM TO BE SOLVED: To provide a sweetener composition as a sweetener composition containing a sweetener with high sweetness, presenting a sweetness quality without discomfort by masking bitterness which a sweetener with high sweetness has.SOLUTION: A sweetener composition contains inositol, and one or more kinds of a sweetener with high sweetness, selected from the group consisting of a Momordica grosvenori extract, a stevia extract, thaumatin, a licorice extract, glycyrrhizin, phyllodulcin, monellin, aspartame, sucralose, saccharin, neotame, acesulfame potassium, and sodium cyclohexylsulfamate.SELECTED DRAWING: Figure 1