An inkjet recording ink composition comprising an aqueous medium having dissolved and/or dispersed therein at least one dye, wherein at least one betaine-type surfactant is contained in the ink composition. The dye is preferably a magenta dye having an azo structure or a cyanine dye having a phthalocyanine structure. The inkjet recording ink composition is excellent in ejection property, light fastness, heat fastness and oxidation resistance and causing less dye bleeding.