Zeus is a god.
Jupiter , also Jove ( Iūpiter [ ˈjuːpɪtɛr ] or Iuppiter [ ˈjʊppɪtɛr ] , gen. Iovis [ ˈjɔwɪs ] ) , is the god of sky and thunder and king of the gods in Ancient Roman religion and mythology . The Romans regarded Jupiter as the equivalent of the Greek Zeus , and in Latin literature and Roman art , the myths and iconography of Zeus are adapted under the name Iuppiter . Zeus . His name is cognate with the first element of his Roman equivalent Jupiter .