The 2015 Japan Sevens was held on 4–5 April 2015. It was the fourth edition of the tournament and the seventh instalment of the 2014–15 Sevens World Series.
Format
The teams were drawn into four pools of four teams each. Each team played everyone in their pool one time. The top two teams from each pool advanced to the Cup/Plate brackets. The bottom two teams from each group went to the Bowl/Shield brackets.