The Tower of Sponsaglia () is a ruined Genoese tower located on the border between the communes of Bonifacio, Corse-du-Sud and Porto-Vecchio on the south east coast of the Corsica. Only the round base survives.
The tower was one of a series of coastal defences constructed by the Republic of Genoa between 1530 and 1620 to stem the attacks by Barbary pirates.