Hugh IV of Cyprus (or Hugh IV of Lusignan) (c. 1295 or 1293–1296 – October 10, 359) is King of Cyprus from March 31, 1324 to his abdication, on November 24, 1358 and, nominally, King of Jerusalem, as Hugh II, until his death.

The son of Guy of Cyprus, Constable of Cyprus (son of Hugh III of Cyprus and wife Isabella of Ibelin), and Eschiva of Ibelin, Hugh succeedshis father as Constable of Cyprus in 1318, and later succeeds to the throne of Cyprus on the death of his uncle Henry II, since Henry II had no son.

He is a member of the House of Lusignan.