There is provided a manipulation direction judgment device including a touch panel for detecting a movement start point and a movement end point of a pointer moving on a display panel, an angle area setting unit for setting a first angle area including at least two primary areas assigned different movement directions, respectively, and boundary areas forming boundaries between the primary areas, an angle area specifying unit for specifying an area in which an angle of a vector connecting the movement start point with the movement end point is located on the first angle area, and a manipulation direction judgment unit for judging the movement direction assigned to the primary area in which the angle of the vector is located, as a manipulation direction, using the first angle area only when the angle of the vector is located in the primary area.
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