Count Rudolph von Apponyi (1 August 1812 – 31 May 1876) was an Austro-Hungarian diplomat and Ambassador to London.

He was born in Karlsruhe, into the noble Apponyi family.

As his father, Rudolph entered the Austrian diplomatic service and held important positions in the course of his career.

He married on 10 May 1840 in Saint Petersburg Anna Alexandrovna von Benckendorff (1818–1900), daughter of Russian general Count Alexander von Benckendorff.

The couple had Two Children: Biography in Biographisches Lexikon des Kaiserthums Oesterreich