Carmen Mauri (song of a Maur) is an anonymous Polish medieval poem written in Latin. It tells the story of Polish magnate Piotr Włast and his rebellion against Prince Władysław Wygnaniec. The poem has survived only in fragmentary form. Its author and exact date of creation is unknown, it is presumed that the author was a Benedictine monk and the poem was written between the second half of the 12th century and the beginning of the 14th century.