The present invention relates to a plasticizer composition and a resin composition including the same, and can provide a plasticizer composition in which a terephthalate-based material and a cyclohexane 1,4-diester-based material are mixed, and the sum of carbon atoms of alkyl groups bonded to the two materials is in the range of 34 to 40, and by which environmental friendliness can be secured, mechanical properties such as tensile strength and an elongation rate and physical properties such as migration properties and volatile loss can be improved to levels equal to or higher than those of existing products, and effects of improving processability and plasticizing efficiency can be expected, and a resin composition including the same.