Freiherr Ladislaus Hengelmüller von Hengervár, was an Austro-Hungarian diplomat of Hungarian origin who was a long-term Ambassador at Washington D.C., throughout many Presidential administrations including those of William McKinley, Theodore Roosevelt and William Taft.
- Occupation
- diplomat, ambassador
- Position held
- ambassador of Austria-Hungary to the United States, envoy of Austria–Hungary to Brazil
- Citizenship
- Hungary
- Born
- May 2, 1845
- Died
