Michael V (Greek: Μιχαήλ Ε΄, Mikhaēl V; 1015 – 24 August 1042) was Byzantine emperor for four months in 1041–1042. He was the nephew and successor of Michael IV and the adoptive son of his wife Empress Zoe. He was popularly called "the Caulker" (Καλαφάτης, Kalaphates) in accordance with his father's original occupation.