Katharina Trettnak-Hahnl Partner
All lawyers

Katharina Trettnak-Hahnl is a partner at KWR and heads the public procurement team. After her studies at the University of Vienna, Katharina Trettnak-Hahnl worked at the law department of the University of Applied Sciences Wiener Neustadt. Furthermore, she was an associate in a renowned Viennese law firm. As a lecturer at the FH Campus Vienna and FH Wiener Neustadt, she has held numerous courses and lectures.


  • BVAEB - legal support of the award procedure "General Contractor Services Geschäftsstelle Linke Wienzeile".
  • EDA Energiewirtschaftlicher Datenaustausch GmbH - Implementation and legal support of the award procedure "EDA Energiewirtschaftlicher Datenaustausch GmbH".
  • Wien 3420 Aspern Development AG - Execution and legal support of the award procedure "Construction of Harte Seekante II

Practice areas

Public Procurement


Public Procurement Law, State Aid Law, Public Law


Universität Wien (Mag. iur. 2000 and Dr. iur. 2001)



German, English

Publications (excerpt)

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