Svetoslav Suronja (Croatian pronunciation: [sʋětoslaʋ sǔːroɲa]), was King of Croatia from 997 to 1000. A member of the Trpimirović dynasty, he reigned with the help of his ban, Varda. John the Deacon (d. 1009) called him "Surinja" (Latin: "Surigna"), adopted in Croatian historiography as "Suronja", meaning "dark man" or "cold man", probably due to his temper. He was the oldest son of king Stephen Držislav, from whom he received the title of duke, and was designated as his successor.