Denis Lapaczinski (born 26 September 1981) is a German former professional football player and manager who played as a defender.
Lapaczinski was born in Reutlingen. He spent four seasons in the Bundesliga with Hertha BSC and Hansa Rostock.
Lapaczinski, along with Petros Tengelidis, became coâÂÂinterim head coach of Reutlingen 05 on 24 November 2011. They managed two matches before Reutlingen 05 hired Murat Isik as their new head coach on 31 December 2011.