A cutting tool comprising: a substrate; and a coated film arranged on the substrate, wherein the coated film includes a first layer, the first layer consists of a plurality of crystal grains (20a, 20b), and the crystal grains (20a, 20b) consist of Al x Ti 1-x C y N 1-y, where x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1, wherein the crystal grains (20a, 20b) include crystal grains having a cubic crystal structure, the first layer has a ratio of an area occupied by the crystal grains (20a, 20b) having a cubic crystal structure of not less than 90%, the area ratio is measured on a cross section along a normal to an interface between the substrate and the coated film using the method described in the description, and the first layer has a thickness of not less than 2 μm and not more than 20 μm, characterized in that in a first region, the crystal grains have an average aspect ratio of not more than 3.0, where the first region is a region that is sandwiched between a surface S1 of the first layer or an interface S2 on a surface side of the first layer and a first virtual plane VS1, and in a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0, where the second region is a region that is sandwiched between the first virtual plane VS1 and an interface S3 on a substrate side of the first layer, where the first virtual plane VS1 passes through a point that is 1 μm away from the surface S 1 or the interface S2 on the substrate side, and is parallel to the surface S1 or the interface S2, and the average aspect ratios are measured on a cross section along a normal to an interface between the substrate and the coated film using the method described in the description. a substrate; and a coated film arranged on the substrate, the coated film includes a first layer, the first layer consists of a plurality of crystal grains (20a, 20b), and the crystal grains (20a, 20b) consist of Al x Ti 1-x C y N 1-y, where x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1, the crystal grains (20a, 20b) include crystal grains having a cubic crystal structure, the first layer has a ratio of an area occupied by the crystal grains (20a, 20b) having a cubic crystal structure of not less than 90%, the area ratio is measured on a cross section along a normal to an interface between the substrate and the coated film using the method described in the description, and the first layer has a thickness of not less than 2 μm and not more than 20 μm, in a first region, the crystal grains have an average aspect ratio of not more than 3.0, where the first region is a region that is sandwiched between a surface S1 of the first layer or an interface S2 on a surface side of the first layer and a first virtual plane VS1, and in a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0, where the second region is a region that is sandwiched between the first virtual plane VS1 and an interface S3 on a substrate side of the first layer, where the first virtual plane VS1 passes through a point that is 1 μm away from the surface S 1 or the interface S2 on the substrate side, and is parallel to the surface S1 or the interface S2, and the average aspect ratios are measured on a cross section along a normal to an interface between the substrate and the coated film using the method described in the description.