Ferdinand Joseph, Prince of Dietrichstein, German prince (d. 1698)
Ferdinand Joseph, Prince of Dietrichstein (25 July 1628 – 1 December 1698), was a German prince member of the House of Dietrichstein, 3rd Prince (Fürst) of Dietrichstein zu Nikolsburg, Princely Count (gefürsteter Graf) of Tarasp, Baron (Freiherr) of Hollenburg, Finkenstein and Thalberg; in addition, he served as Lord Chamberlain (Obersthofmeister), Conference Minister (Konferenzminister) and Privy Councillor (Geheimrat) of Emperor Leopold I, and Knight of the Order of the Golden Fleece since 1668.

He belonged to the Austrian noble family of Dietrichstein, whose members thanks to many years of service to the House of Habsburg where raised to the rank of imperial barons (Reichfreiherr; in 1514), imperial counts (Reichsgraf; in 1600 and 1612) and finally in 1624 under the laws of primogeniture where raised to the rank of imperial princes (Reichsfürst).

Born in Vienna, he was the seventh child but eldest surviving son of Maximilian, 2nd Prince of Dietrichstein zu Nikolsburg, and his first wife, Princess Anna Maria Franziska, a daughter of Karl I, Prince of Liechtenstein, Duke of Troppau and Jägerndorf and Anna Maria Šemberová of Boskovice and Černá Hora.

After the death of his father in 1655, Ferdinand Joseph succeeded him as 3rd Prince of Dietrichstein zu Nikolsburg, Lord of Nikolsburg (now Mikulov), Polná, Kanitz (now Dolní Kounice), Leipnik (now Lipník nad Bečvou), Weisskirch, Lord of Nußdorf ob der Traisen (with the including districts of Reichersdorf and Franzhausen). He later inherited the Bohemian Lordships of Libochovice, Budyně nad Ohří, Pátek, Nepomyšl and Vlachovo Březí.