Melchior Hubert Paul Gustav Graf[a] von Hatzfeldt-Wildenburg (8 October 1831 – 22 November 1901) was a German diplomat who served as ambassador to the United Kingdom from 1885 to 1901.

In 1885, he succeeded Count Münster as ambassador to United Kingdom until 1901, during which he signed the Yangtze Agreement in 1900.

[2] In his letter accepting Count von Hatzfeldt's request to retire, Emperor Wilhelm II wrote: "I feel impelled to express my imperial thanks for the excellent services which, during the forty-four years of your official life, you have rendered to my predecessors on the throne, to myself, and to the whole Fatherland."

[3] They divorced in 1886, but were remarried two years later in order that their daughter might marry Prince Max of Hohenlohe-Öhringen.

[7] In 1910, his son inherited the title and properties of Paul's nephew, Prince Franz von Hatzfeldt-Wildenburg.