Maria Eleonore of Liechtenstein née Oettingen-Oettingen and Oettingen-Spielberg (Oettingen, 7 July 1745 – Vienna, 26 November 1812) was a princess of Liechtenstein by marriage to Prince Karl Borromäus of Liechtenstein, and a politically influential Austrian salonist.
Between 1768 and 1790, she acted as the political adviser of Emperor Joseph II through her salon or discussion circle.