They defeated the United States 1-0 in front of a crowd of 8098 supporters.
Japan's victory goal was scored by forward Mami Ueno three minutes to full-time.
After over 20 attempted goals through the 86 minutes of play, Ueno scored in the penalty box, sweeping a clear shot from the right and finding the top left corner of the net.
This was Ueno's fifth goal overall in the tournament.
Japan, in white and blue, dominated the game, having 63 percent ball possession.