Peter I (9 October 1328 – 17 January 1369) was King of Cyprus and titular King of Jerusalem from his father's abdication on 24 November 1358 until his death in 1369. He was invested as titular Count of Tripoli in 1346. As King of Cyprus, he had some military successes, but he was unable to complete many of his plans due to internal disputes that culminated in his assassination at the hands of three of his knights. Early life and crowning Peter was born in Nicosia in 1328, the second son of Hugh IV of Cyprus, the first by his second wife Alice of Ibelin. Hugh's heir apparent was his first born son, Guy, who had married Marie of Bourbon. Guy died before his father, however; and though his son, also named Hugh, demanded the throne, Peter was crowned King of Cyprus by Guy of Ibelin, bishop of Limassol in the Cathedral of Santa Sophia, Nicosia on 24 November 1359. In 1349 he traveled secretly to Europe with his brother John. This upset their father who sent ships to find his sons and bring them back. When they were brought back, Peter and John were imprisoned for leaving without his permission. Despite Leontios Machairas stating Peter and John were held for three days, William of Machaut states that Peter was imprisoned for two months and nine days. Peter was crowned as titular King of Jerusalem in Saint Nicholas Cathedral in Famagusta on 5 April 1360, succeeding his father. Upon the fall of Acre in 1291, Cyprus became the last stronghold of Christianity in the Middle East. Peter understood the importance of his kingdom, and believed that his mission was to fight Islam. He had ambitions to retake the Kingdom of Jerusalem to which the house of Lusignan yet pretended.

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Peter I (9 October 1328 – 17 January 1369) was King of Cyprus and titular King of Jerusalem from his father's abdication on 24 November 1358 until his death in 1369. He was invested as titular Count of Tripoli in 1346. As King of Cyprus, he had some military successes, but he was unable to complete many of his plans due to internal disputes that culminated in his assassination at the hands of three of his knights.