Jonas Budrys (born Jonas Polovinskas, 1889–1964) was a counterintelligence officer and later a Lithuanian diplomat. He is best known as the commander of Lithuanian forces during the Klaipėda Revolt in January 1923. The region was a League of Nations mandate administered by the French. Budrys led a small Lithuanian military force into the region and successfully took control. Klaipėda was incorporated into Lithuania as an autonomous region. After the revolt, Budrys served as Lithuania's representative to the region and its first governor until 1925. He was later Lithuanian consul to East Prussia and New York City. His son, Algis Budrys, is a science fiction writer.