Count Dénes "Dionys" Széchenyi de Sárvár-felsővidék, was an Austro Hungarian soldier and diplomat.
- Occupation
- diplomat
- Position held
- ambassador of Austria-Hungary to Denmark, Member of the House of Magnates
- Citizenship
- Hungary
- Born
- December 1, 1866, 1866
- Died
- June 26, 1934, 1934