CUTTING TOOL

A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.55 or more and 0.7 or less, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 40 nm or more and 95 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 50 nm or more and 100 nm or less, a maximum value of 90 nm or more and 110 nm or less, and a minimum value of 40 nm or more and 60 nm or less.