The 2015–16 Top League was the 13th season of Japan's domestic rugby union competition, the Top League. It kicked off on 13 November 2015 and was completed on 24 January 2016. The final was won by Panasonic Wild Knights defeating Toshiba Brave Lupus by 27–26. A short pre-season competition was also played from 3 September to 10 October 2015 to provide each Top League team with five official matches before the regular season.