Mikalojus Daukša (other possible spellings include Mikalojus Daugsza, Polish: Mikołaj Dauksza and Mikolay Dowksza; after 1527 – February 16, 1613 in Medininkai) was a Lithuanian and Latin religious writer, translator and a Catholic church official. He is best known as the first among Lithuania's humanists to underline the need to codify and promote the Lithuanian language over Chancery Ruthenian and Polish, which were in use in the Grand Duchy at the time. Daukša's Lithuanian translation of 's catechism became the first book in Lithuanian to be published in the Grand Duchy of Lithuania.