Constantine Lekapenos or Lecapenus (Greek: Κωνσταντίνος Λακαπηνός) was the third son of the Byzantine emperor Romanos I Lekapenos (r. 920–944), and co-emperor from 924 to 945. With his elder brother Stephen, he deposed Romanos I in December 944, but was overthrown and exiled by the legitimate emperor Constantine VII (r.