Bernd Diener (born 19 June 1959) is a former motorcycle speedway rider from Germany.

[1] Diener has twice been on the podium in the World Longtrack Championship 1996 & 2004.

[2] Diener won the European Grasstrack Championship in 1999.

[3] Diener won the German national longtrack championship in 2000 and went on to finish fifth in the World Championship that year.

[4] Diener won the German championship silver medal three times and bronze medal seven times spanning the years 1995 to 2019.