Kęstutis Mažeika (born 28 April 1982) is a Lithuanian politician. He currently serves as Minister of Agriculture in the cabinet of Prime Minister Mindaugas Sinkevičius since 14 July 2026. He previously served as Minister of Environment in the cabinet of Prime Minister Saulius Skvernelis from 4 April 2019 to 11 December 2020.
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