Electronic pen

An electronic pen comprising:

• a tubular casing having an opening on a pen tip side of the casing;
• a bar-shaped core body including a core bar and a protective component that covers part of the core bar from an end portion of the core bar on the pen tip side of the casing to a position separate from the end portion in a rear end direction of the core body by a predetermined length;
• a core body holding part that is disposed in the casing and holds a rear end portion of the core body such that a tip portion of the core body protrudes from the opening of the casing;
• electronic parts that are disposed at a rear stage of the core body holding part in the casing and that, in operation, perform electronic pen functions;
• a tubular internal constituent part through which the core body penetrates on the pen tip side in the casing;
• an outside ring-shaped elastic component being in contact with an entirety of a circumference of a side surface of the internal constituent part and an entirety of a circumference of an inner wall surface of the casing;
• and
• an inside ring-shaped elastic component being in contact with an entirety of a circumference of a rear end portion of the protective component of the core body and an entirety of a circumference of an inner wall surface of the internal constituent part.