Peter, also Peter II of Courtenay (French: Pierre de Courtenay), was emperor of the Latin Empire of Constantinople from 1216 to 1217.
Peter II was a son of Peter I of Courtenay (died 1183), the youngest son of Louis VI of France and his second Queen consort Adélaide de Maurienne. His mother was Elisabeth de Courtenay, daughter of Renaud de Courtenay (died 1194) and Hawise du Donjon.
When his brother-in-law Henry, the second emperor of the Latin Empire, died without sons in 1216, Peter was chosen as his successor, and with a small army he left his residence of château de Druyes in France to take possession of his throne. Consecrated emperor at Rome, in a church outside the walls, by Pope Honorius III on 9 April 1217, he borrowed some ships from the Venetians, promising in return to conquer Durazzo for them; but he failed in this enterprise, and sought to make his way to Constantinople by land. On the journey he was seized by the despot of Epirus, Theodore Komnenos Doukas, and, after an imprisonment of two years, died, probably by foul means. Peter thus never governed his empire, which, however, was ruled for a time by his wife, Yolanda, who had succeeded in reaching Constantinople. Two of his sons, Robert and Baldwin, were in turn emperors of the Latin Empire of Constantinople.