End mill

An end mill comprising:

• an end mill body configured to be rotatable around an axis;
• chip discharge grooves configured to extend from a tip side in an axial direction of the end mill body toward a rear end side in the axial direction while twisting around the axis;
• and
• outer peripheral cutting edges each being configured to be formed at an intersection ridge portion on a forward side in a rotation direction between the chip discharge groove and an outer peripheral flank face,
• wherein at least one outer peripheral cutting edge includes a plurality of notch portions that discontinue the outer peripheral cutting edge,
• the notch portion has a non-cutting region on an extension line of the outer peripheral cutting edge, and
• circumferential positions from a front end to a rear end in the rotation direction of all the non-cutting regions in the end mill body do not overlap each other.