A position indicator comprising: a pen-like housing; a first electrode and a second electrode that are arranged at one end of the housing in an axial center direction thereof, the second electrode being arranged to encircle the first electrode in such a manner as to let the first electrode be partially exposed in the axial center direction of the housing; and a signal transmission control circuit that supplies at least the first electrode with a signal such as to interact capacitively with a sensor of a position detection apparatus, wherein the signal transmission control circuit is configured to cause the second electrode selectively to output a signal that cancels out the signal output from the first electrode, wherein the position indicator is characterized in that the signal transmission control circuit includes an oscillation circuit configured to generate the signal to be supplied to the first electrode, wherein the position indicator is configured such that when a tip part of the first electrode is in contact with a surface, the signal from the oscillation circuit is supplied to the first electrode and the second electrode outputs the signal opposite in phase to the signal from the first electrode, and when the tip part of the first electrode is not in contact with a surface, the signal from the oscillation circuit is supplied to the first electrode and the second electrode outputs a signal in phase with the signal from the first electrode. a pen-like housing; a first electrode and a second electrode that are arranged at one end of the housing in an axial center direction thereof, the second electrode being arranged to encircle the first electrode in such a manner as to let the first electrode be partially exposed in the axial center direction of the housing; and a signal transmission control circuit that supplies at least the first electrode with a signal such as to interact capacitively with a sensor of a position detection apparatus, wherein the signal transmission control circuit is configured to cause the second electrode selectively to output a signal that cancels out the signal output from the first electrode, wherein the position indicator is characterized in that the signal transmission control circuit includes an oscillation circuit configured to generate the signal to be supplied to the first electrode, wherein the position indicator is configured such that when a tip part of the first electrode is in contact with a surface, the signal from the oscillation circuit is supplied to the first electrode and the second electrode outputs the signal opposite in phase to the signal from the first electrode, and when the tip part of the first electrode is not in contact with a surface, the signal from the oscillation circuit is supplied to the first electrode and the second electrode outputs a signal in phase with the signal from the first electrode. wherein the position indicator is characterized in that the signal transmission control circuit includes an oscillation circuit configured to generate the signal to be supplied to the first electrode, wherein the position indicator is configured such that when a tip part of the first electrode is in contact with a surface, the signal from the oscillation circuit is supplied to the first electrode and the second electrode outputs the signal opposite in phase to the signal from the first electrode, and when the tip part of the first electrode is not in contact with a surface, the signal from the oscillation circuit is supplied to the first electrode and the second electrode outputs a signal in phase with the signal from the first electrode.