Šėmeta is a Lithuanian-language surname. It belongs to the Lithuanian noble family whose progenitor was Šemeta Nameikaitis, known since the 15th century. Polonized variants of the surname include Szemiot, Szemioth, Szemiott, Szemet; Russified: Shemet. A derived surname is Shemetov.
Notable people with the surname include:
Algirdas Šemeta (born 1962), Lithuanian economist and politician (1802–1882), Lithuanian military figure, one of the military leaders of the November Uprising
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