Heinrich Pfusterschmid-Hardtenstein (*16 January 1927 – 6 May 2024, Graz, Styria) was an Austrian diplomat, who has also been active in the academic world and cultural policy.
After attending elementary and secondary school (1934–45) Heinrich Pfusterschmid-Hardtenstein studied law at the University of Graz.
He acted as deputy head of delegation at Austria’s mission to the High Authority of the European Coal and Steel Community in Luxembourg (1960–67).
In this capacity he headed the Austrian delegation at preparatory negotiations for the Conference on Security and Co-operation in Europe (CSCE).
While director of the Diplomatic Academy of Vienna he led seminars, and also acted as employee representative and member of the disciplinary commission of the Foreign Ministry.