Guy of Lusignan (1150 – 1194) was king of Jerusalem, first as the husband and co-ruler of Queen Sibylla from 1186 to 1190, then as disputed ruler from 1190 to 1192. He was also lord of Cyprus from 1192 to 1194. As king, Guy was highly unpopular amongst the nobles of the Kingdom of Jerusalem, and is often blamed for the fall of the kingdom to Saladin.
Guy, a Frankish Poitevin knight, was the youngest son of Hugh VIII of Lusignan. After killing Patrick, 1st Earl of Salisbury, in a failed attempt to kidnap Eleanor of Aquitaine, he was banished from Poitou. After arriving in the Holy Land at an unknown date from 1173 to 1180, Guy was hastily married to Sibylla, the sister of Baldwin IV of Jerusalem, in 1180 to prevent a political coup.