An electronic pen includes a core body including a tip portion having a tip and a tapered side surface tapered toward the tip and having a recessed section recessed toward a tip side of the core body from a side of the core body that is opposite to the tip side of the core body, and including a core rod that passes through a center axis of the recessed section from a side of the tip portion that includes the tip and extends away from the tip; and a tubular casing in which a pen-pressure detector is installed, the core body being attached to the tubular casing in an axially movable manner such that the core rod is pressable against the pen-pressure detector, and the tubular casing having a surface that is adjacent to an inner or outer surface of the recessed section of the core body.