This volume contains the papers selected for presentation at the 11th European Conference on Logics in Arti?cial Intelligence (or Journ ees Europ eennes sur la Logique en Intelligence Arti?cielle, JELIA), which was held from September 28 to October 1, 2008, at the Technische Universit] at Dresden, Germany. In total, 98 researchpapers were submitted by researchersfrom 24 countries. Each submission was reviewed by at least three expert reviewers. The ?nal de- sionsonthepapersweretakenduringanelectronicProgramCommitteemeeting held on the Internet. The Program Committee accepted 32 research...