Otto Wilhelm Masing, German-Estonian linguist and author (d. 1832)

Otto Wilhelm Masing (8 November [O.S. 28 October] 1763 in Lohusuu, Kreis Dorpat, Livland Governorate – 15 March [O.S. 3 March] 1832 in Äksi, Livland Governorate) was an early Baltic German Estophile and a major advocate of peasant rights, especially regarding education.