A probe pin and an electronic device using the same. The probe pin is provided with: a coil spring (3); a first plunger (1) having a body section (11), a first elastic section (12), and a second elastic section (13), the first and second elastic sections (12, 13) extending in the same direction from the body section (11); and a second plunger (2) press fitted between the first elastic section (12) and the second elastic section (13). The first plunger (1) and the second plunger (2) are electrically conductive and are inserted into the coil spring (3) from the opposite ends (3A, 3B), respectively, thereof. The first elastic section (12) and second elastic section (13) of the first plunger (1) grip the second plunger (2) to thereby cause the first elastic section (12) to be in pressure contact with one surface of the second plunger (2). The first plunger (1) and the second plunger (2) are electrically connected through the pressure contact section.