Gáspár Károlyi, or in Protestant usage, Károli (c. 1529, Nagykároly – 31 December 1591,^[1] Gönc) was a Hungarian Calvinist pastor. He was a major figure in the Reformed Church in Hungary.^[2] He edited the Vizsoly Bible.^[3]

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He was born in Nagykároly (present-day day Carei) c. 1530 as Gáspár Radicsics. Károlyi was likely of Serbian descent and his parents might have fled north from the Délvidék due to the Ottomans' hazard.^[4]