PoEM 2013 is the 6th IFIP WG 8.1 working conference on the Practice of Enterprise Modeling. PoEM 2013 aims at improving the understanding of the practice of Enterprise Modelling (EM) by offering a forum for sharing experiences and knowledge between the academic community and practitioners from industry and the public sector. The conference proceedings will be published by Springer (in LNBIP - Lecture Notes in Business Information Processing). Short and practitioner papers are planned to be published in additional proceedings by CEUR-Press. The conference expects the following types of papers: Research papers- describe original research contributions to the area of EM. Experience papers - present problems or challenges encountered in practice, relate success and failure stories, or report on industrial cases and practices. Practitioner papers - may address any aspect of EM or enterprise architectures relevant from a practitioners point of view. These papers have a specific review procedure. Short papers - can be used to present work in progress and emerging EM challenges. That includes presentation of ongoing thesis or re-search work by PhD or Master students.