Joseph Franz Maria Anton Hubert Ignatz Fürst und Altgraf zu Salm-Reifferscheidt-Dyck (4 September 1773 at Castle Dyck near Neuss – 21 March 1861 in Nice) was a German aristocrat, amateur botanist and owner of Castle Dyck.

Joseph Franz was a member of the Salm-Reifferscheid-Dyck line of the House of Salm, an important aristocratic family that had ruled a small territory until the mediatisation of small German states in the early 19th century.

After his training at the Jesuit College in Cologne, he traveled to Vienna, Brussels and Paris for private academic studies.

As a compensation, Count Joseph zu Salm-Reifferscheidt-Dyck was raised to the hereditary rank of Prince in Prussia three years later, in 1816.

[1] Constance was a French poet and miscellaneous writer, who also divorced her first husband, Jean Baptiste Pipelet de Leury (1759–1823).